محسن ارزنلو

Antibiotic resistance represents a critical global concern within the medical community, posing significant challenges in the treatment of infections caused by drug-resistant pathogens. Over the years, broad-spectrum fluoroquinolones have been extensively used to treat infections caused by both Gram-positive and Gram-negative bacteria, including Pseudomonas aeruginosa. In this study, we decided to assess the prevalence of plasmid-mediated quinolone resistance mechanisms among clinical isolates of P. aeruginosa in Ardabil hospitals.

We analyzed a total of 200 clinical isolates of P. aeruginosa, collected between June 2019 and May 2023. The antibiotic resistance profiles of these strains against various fluoroquinolone antibiotics were determined using the disk diffusion method. Additionally, we investigated the presence of qnrA, qnrB, qnrC, qnrD, and qnrS genes through polymerase chain reaction (PCR) analysis. Furthermore, we assessed the expression levels of efflux pump genes and outer membrane porin genes using the quantitative reverse transcription PCR (qRT-PCR) in fluoroquinolone-resistant P. aeruginosa strains.

Our findings revealed that 69% of P. aeruginosa strains were resistant to fluoroquinolones. The resistance rates for different fluoroquinolones were as follows: ciprofloxacin 55.5%, ofloxacin 62%, norfloxacin 53.5%, lomefloxacin 55.3%, and levofloxacin 55.5%. Notably, 78.9% of these strains exhibited multidrug resistance (MDR). Among the qnr genes, qnrB was the most prevalent (2.9%). No other qnr genes were identified. Interestingly, 75% of P. aeruginosa strains carrying the qnrB gene showed overexpression of efflux pump genes, while 100% exhibited down-regulation of the oprD gene.

Given the high prevalence of fluoroquinolone-resistant P. aeruginosa clinical isolates in Ardabil hospitals and the multifactorial nature of resistance, continuous monitoring of antibiotic resistance trends and understanding the underlying resistance mechanisms are crucial for selecting appropriate treatment strategies.

Antibacterial properties of restorative materials are of great advantage as they control the progression of tooth decay. The use of self-adhesive composite materials has some benefits such as easier application and reduced treatment time. Because the antibacterial properties of restorative materials can play an important role in preventing secondary decay, especially in cervical restorations, this study was designed to evaluate the in vitro antibacterial activity of self-adhesive flowable composite against Streptococcus mutans.

An in vitro study was performed using 9 discs for each composite and glass ionomer group. The discs were prepared in three groups: micro-hybrid flowable composite samples, self-adhesive flowable composite samples, and self-curing glass ionomer samples. Direct contact test was used to compare the antibacterial properties of the discs. Data collection was done by direct contact test and visual counting of grown bacterial colonies. Data were recorded in a checklist developed according to the objectives of the study and analyzed using One-way ANOVA and Independent T-test in SPSS V22.

Findings showed that the antibacterial effect of glass ionomer was greater than that of flowable micro-hybrid composite and self-adhesive flowable composite. Also, a significant difference was observed between the antimicrobial activity of flowable microhybrid composite and self-adhesive flowable composite against Streptococcus mutans (P<0.05).

Glass ionomer and self-adhesive composite have a higher antibacterial effect against Streptococcus mutans, so they can be used as alternatives to treat tooth decay

 Integrons play an essential role in disseminating drug resistance genes among bacteria. The aim of this study was to determine the prevalence of integrons, and Extended-Spectrum β-Lactamase (ESBL) genes in Escherichia coli (E. coli) isolates collected from patients with urinary tract infection (UTI) referred to teaching hospitals in Ardabil, Iran.

 In this descriptive, cross-sectional study (2017-2018), 163 isolates of E.coli were collected from patients with UTI. The drug susceptibility pattern of these isolates to 12 common antibiotics was investigated using the disk diffusion method based on CLSI guidelines. The prevalence of class 1, 2 ,3 integrons and ESBL genes was verified by the PCR method. Finally, the genetic variation of isolates was analyzed using the ERIC-PCR method.

 Of 163 isolates, 138 (84.7%) isolates were multidrug-resistance (MDR) strains. The lowest and highest antibiotic resistance was reported to nitrofurantoin and ampicillin, with a resistance rate of 1.2% and 89.6%, respectively. The incidence of class 1 and 2 integrons was obtained in 39.9% and 14.1% of the isolates, respectively. Class 3 integron was not found in any of the isolates. Based on the ERIC-PCR fingerprinting method, 4 ERIC types were detected.

 Our study showed that E. coli isolates taken from patients mainly were MDR strain and resistant to many of the common antibiotics used to treat urinary tract infections. Using the correct dose of medication and multidrug therapy would be effective in reducing the incidence of antibiotic resistance.

Secondary caries is one of the main causes for replacement of dental restorations. Glass ionomer cement (GIC) has cariostatic properties and antibacterial effect due to the ability to release fluoride. The aim of this study was to compare the antibacterial activity and fluoride release between three different formulations of GIC.

This experimental study was conducted in Ardabil Dental School, Iran 2020. We evaluated fluoride release (n=15) and antibacterial activity (n=24) of three GICs including Fuji IX GP Extra, Fuji II LC, and Equia Forte against Streptococcus mutans and Lactobacillus acidophilus. Microtubes containing each bacterium and no glass ionomer were considered as positive controls. Antibacterial activity was studied using well diffusion test and time-kill curve was measured. The amount of released fluoride was measured at days 1, 2, 3, 4, 7, 14, and 21 by specific fluoride electrode. Data were analyzed applying ANOVA, post hoc Sidak, and Tukey test.

Fuji IX GP Extra and Equia Forte showed significantly higher and lower antibacterial activity against both strains, respectively (P<0.001). The least fluoride release was associated with Equia Forte (P<0.001), but Fuji IX GP Extra and Fuji II LC did not show any significant difference (P>0.05).

Fuji IX GP Extra had the greatest growth-inhibitory effect on Streptococcus mutans and Lactobacillus acidophilus due to the highest fluoride release.

Bacterial antibiotic resistance is becoming a global health crisis. The aim of this descriptive, cross-sectional study was to investigate the prevalence of multidrug-resistant Pseudomonas aeruginosa strains in Ardabil.

During 9 months, between July 2019 and March 2020, 50 strains of Pseudomonas aeruginosa were collected from different clinical specimens in four hospitals of Ardabil and the prevalence of MDR, XDR and PDR strains of Pseudomonas aeruginosa were evaluated. Antibiotic susceptibility testing was assessed using the disk diffusion method.

In the present study, the prevalence of MDR, XDR and PDR strains of Pseudomonas aeruginosa were 52%, 40% and 14%, respectively.

Due to high prevalence of multidrug-resistant strains of Pseudomonas aeruginosa in Ardabil, continuous monitoring of the antibiotic resistance trend in clinical isolates in order to select the best medication is necessary.

The purpose of this study was to investigate the exposure of individuals to bacterial bioaerosols in indoor air and to investigate the factors affecting their concentration in Ardabil city. In this study, 12 Sports halls (including futsal, volleyball, and bodybuilding halls) were selected and the samples of bacterial bioaerosols were taken from their indoor air.

Air sampling was performed using Anderson's single-stage sampler with a discharge rate of 28.3 liters per minute and a respiratory range of 10 minutes.

The results showed that the mean concentration of bacteria in all gyms was 494.24 CFU/m3. The concentration of bacteria in the gyms of Mohaghegh Ardabili, Medical Sciences, Islamic Azad and Payam Noor were 203.5, 728.5, 504.6 and 576 CFU/m3, respectively. The average bacterial concentration in the air was 60.5 CFU/m3. The dominant species of bacteria in indoor air were Staphylococcus aureus, Staphylococcus epidermidis and Bacillus, respectively.

According to the results of this study, it is found that the concentration of bacterial bioaerosols is high in indoor air of sports halls and these halls can be considered as a potential hazard and cause respiratory diseases in athletes who use these halls.

 The purpose of this study was to determine the bacterial bioaerosols in indoor air of Ardabil universities and to investigate the factors affecting their concentration in Ardabil city.

 Air sampling was performed using Andersen single-stage sampler at a flow rate of 28.3 liters per minute and a respiratory range of 10 min. In this study, trypticase soy agar containing cycloheximide antibiotic was used for bacterial culture. Biochemical tests such as DNase, catalase, oxidase, coagulase, bile esculin hydrolysis test, urease, citrate test, antibiotic resistance to novobiocin, bacitracin and optochin were used for identification and differentiation of isolates.

 The mean bacterial concentration in Ardabil university of medical sciences in the open air, outside the college, the halls, the classrooms and the staff rooms  was 18, 88.4, 76.6, 77.4 CFU/m3 , respectively. The concentration of bacteria in Islamic Azad university of Ardabil in the open air, outside the college, the halls, the classrooms and the staff rooms was 103, 97, 124, 132 CFU/m3, respectively. The dominant species of bacteria in indoor air were Staphylococcus aureus, Staphylococcus epidermidis, Actinomycetes and Bacillus, respectively.

 According to the results of this study, it is found that the concentration of bacterial bioaerosols in indoor air is not more than standard, but the abundance of bacterial species can cause lung, intestinal and other diseases in academic personnel, staff and students in the long-term.

One of the major purposes of pediatric dentistry is to maintain deciduous teeth in anatomical and functional conditions up to their physiological exfoliation and eruption of permanent teeth. Whenever pulp gets involved or exposed to mouth area and microorganisms penetrate into pulp, deciduous teeth needs pulp therapy. In the sterile environment, the exposed pulp tissue is able to repair itself and also to create a dentin bridge, but in the presence of bacteria, development of disease and ultimately death of the pulp will be inevitable. The ideal pulpotomy cement should have good physical and biological properties such as sealing of the remaining pulp tissue, being biocompatible and possessing antibacterial activity. The aim of this study was to compare the antibacterial effect of some usual materials used for pulpotomy in deciduous teeth. In this study, we evaluated the antibacterial activity of materials used in deciduous teeth pulpotomy including Zoliran, Sina Zonalin, Kemdent Zonalin, MTA (OrthoMTA) and CEM Cement against Streptococcus mutans and Lactobacillus acidophilus. Well diffusion test and disk diffusion test and time kill curve were used for antibacterial activity assay. Also, we evaluated stability of antibacterial activity of the materials. The antibacterial activity in disk diffusion and well diffusion test was measured based on the diameter of the zone of inhibition, whereas in time kill curve the optical density of the bacterial suspension was measured. We used analysis of variance (ANOVA) and Tukey’s test at the significance level of 5% . In well diffussion and disk diffussion tests all of the materials except CEM Cement showed antibacterial activity against Streptococcus mutans and Lactobacillus acidophilus. The largest and smallest zones of inhibition belonged to zoliran and MTA respectively. The results of time kill curve revealed a similar pattern, so that during the experiment period Zoliran, Sina Zonalin, Kemdent Zonalin, MTA and CEM Cement showed the greatest effects in both groups of bacteria respectively. Reinforced ZOE groups had the greatest effect in inhibition of growth of S.mutans and L.acidophilus compared to MTA and CEM Cement. Thus, use of Zoliran, Sina and Kemdent Zonalin cements in pulpotomy of deciduous teeth can be useful in controlling bacterial growth and achieving success in pulpotomy.

Microorganisms in hospitals are potential sources of infection to patients and staffs. Bioaerosol exposure is associated with a vast range of adverse health effects including infectious diseases, acute toxic effects, allergy. This study aimed to survey the type and density of bioaerosols in ambient air of different wards of educational hospitals Ardabil in 2016.
Material and This cross-sectional study was conducted in 2 educational hospitals of Ardabil city in 2016. ZTHV02 sampler and Tryptic soy Agar along with Cycloheximide antibiotic were used to evaluate and determine the airborne bacterial counts. The average sampling time was 10 minutes. Air samples were transported to the lab just after sampling and incubated for 48 hours at 37 ºC. Then, raised colonies were counted. Bacterial density was expressed as CFU/m3 ± SD.
Mean bacterial concentrations were 10.3 and 23.4 CFU/m3 in Imam and Alavi hospitals, respectively. X-ray room in Imam Khomeini hospital and ICU room in Alavi hospital had the highest bacterial count. But, the least bacterial loads were observed in ICU and Angiography wards of Imam Khomeini and CTSCAN ward in Alavi hospitals. The most prevalent bacteria species isolated from air samples of Imam hospital was Enterococcus spp followed by Pseudomonas spp, coagulase negative Staphylococci spp and Non -Enterococcus group D Streptococci and for Alavi hospital; Coagulase negative Staphylococci spp followed by Psodomonas spp, Klebsilla spp and, Enterococcus spp.
No significant correlations were found between bacterial counts, temperature and humidity of the sampling sites. However, bacteria density significantly were higher in morning shift comparing to evening shift (P High concentration of airborne bacteria bio-aerosols in Ardabil hospitals can be important health risks for health workers and the patients.

Historically, tuberculosis has been the leading cause of death throughout human history. Tuberculosis infection (TB) causes by Mycobacterium tuberculosis that is very dangerous and can affect any parts of the body, especially lungs. Tuberculosis infection still remains a serious threat to human public health due to its contagious nature, capability to stay latent form in host for indefinite time and then appear as active disease. It is estimated that one third of world’s population, nearly 2 billion persons are infected with Mycobacterium tuberculosis. Transmission occurs among people through inhalation of infected droplets. Lungs and especially alveolar macrophage are primary sites of infection. Mycobacterium tuberculosis bacilli by preventing fusion of phagosome with lysosome can remain alive inside the macrophages. Such situation defined as latent infection. In fact, persons with latent tuberculosis infection (LTBI) are only infected with M. tuberculosis without any sign of infectious. Latent infection in compared with active infection is not contagious, but in about 10-5 percent of people will develop active tuberculosis especially in elderly and people who use immunosuppressive drugs. Pulmonary TB is an active form of tuberculosis infection in which bacteria can spread among people by infected droplets. So identifying and treating people with latent TB infection can significantly reduce the progression of latent form to active infection. The tuberculin skin test (TST) is the most widely used test in worldwide that is applied to determine a person who is infected with M. tuberculosis. TST provide valubale information for diagnosis LTBI however its specificity can be reduced by bacillus Calmette-Guérin (BCG) vaccination and infected with non-tuberculous mycobacteria (NTM). In TST test host hypersensitivity responses to Purified protein derivative (PPD) from mycobacterium are evaluated. TST positive reaction indicates the presence of high risk for acquiring TB infection or progression of latent tuberculosis to active form. Previous studies indicated that there is correlation between TST response and subsequent risk of active TB. Experimental evidence has shown that treatment of latent infection in the basis of positive TST reduces the risk of active TB. Although TST is far from gold standard but it's low cost and simplicity make it a suitable laboratory test especially in developing country.

Candidiasis is a fungal infection which is caused by Candida spp. Candida albicans is the most common agent of candidiasis. This infection may cause various side effects during pregnancy including prematurity, chorioamnionitis, candidal pneumonia, and systemic candidiasis of infants. This research was conducted for determining the prevalence and antibiotic resistance pattern of Candida spp, collected from pregnant women admitted to health centers in Ardabil, Iran.
Totally, 408 subjects were included in this study. Demographic data and risk factors were recorded using a questionnaire. Two swab samples were taken from vulvovaginal mucus. One swab was used for preparing smear and direct microscopic examination and the second one used for cultivating the specimen. After identification of Candida spp., antimicrobial resistance pattern was determined by disk diffusion method against Fluconazole, Ketoconazole, Clotrimazole, Nystatin and Amphotericin B. Results were interpreted according to CLSI guidelines. The data were analyzed by χ2 and t-test using SPSS-19.
Out of 408 subjects, 143 cases (35%) were positive for candida spp. The Candida albicans with 119 (83.2%) cases was the most prevalent species followed by Candida glabrata, Candida krusei, Candida parpsilosis and Candida tropicalis.According to disk diffusion test, overall 116 (81.1%) isolates were resistant to Fluconazole, 100 (69.9%) to Ketoconazole, 67 (46.9%) to Clotrimazole and 25 (17.5%) to Amphotericin B. Candida spp. had a highest sensitivity (118, 82.5%) to Nystatin. For Candida albicans 97(81.5%) isolates were resistant to Fluconazole and 99(83.2%) isolates to Nystatin. For Candida glabrata 10 (90.9%) isolates were resistant to Fluconazole, and 9(81.8%) sensitive to Nystatin.
According to the results of this study, vulvovaginal candidiasis is prevalent among pregnant women in Ardabil and isolates were significantly resistant against commonly used antifungal drugs. Nystatin was the most effective against Candida spp. As antibiogram for fungal agents is not routinely performed, the similar periodical studies could be useful for choosing appropriate antibiotics in treatment of vulvovaginal candidiasis.

After live attenuated and subunit vaccines, DNA vaccines were introduced as a third generation vaccine in the field of vaccinology. This type of vaccine is a promising approach to deal with infectious agents in the future. Although, many aspects of this type of vaccine has not yet been identified, its use has been initiated in humans and clinical trials, and several DNA vaccines have been developed against veterinary infectious diseases. This generation of vaccine has provided new approaches to deal with and control existing diseases. In addition to infectious diseases, this type of vaccine can also be used against different types of tumors. Despite numerous attempts, only one type of DNA vaccine has been approved for use in human. The present study focuses on biology, advantages, and disadvantages of DNA vaccine and investigates its capacity in stimulating different types of immune responses.

Despite advances in the vaccinology and chemotherapy in the past century, tuberculosis is still responsible for two million deaths every year. Emergence of multi-drug resistant strain and coinfection of TB-HIV make it a serious concern. Treatment and control of tuberculosis is a great health burden in every community. Active tuberculosis in children has very severe consequences especially those who are under 5-years-old, therefore vaccine indication should be taken. Bacille Calmette-Guérin (BCG) is a live attenuated strain of Mycobacterium bovis that has been used for providing immunity or protection against tuberculosis (TB). In addition, BCG provides relative protection against leprosy and Buruli ulcer, it also can be used for treatment of bladder cancer. BCG is the most widely administered vaccine around the world. It has been given to over three billion individuals over the past decades. At first it was developed in 1908 at the Pasteur Institute in Lille by Albert Calmette and Camille Guérin. In fact BCG is a strain of Mycobacterium bovis that bear deletion in its genome following too long subculture in special media. Deletion in region of deletion 1 (RD1), a specific region of Mycobacterium bovis genome, has decreased pathogenicity of BCG strain. Following culture of BCG on different media since 1921 make genetic variation in the BCG strains that have specific characteristics. BCG should begin given to only immune-competent individuals and should not be administered to immunocompromised people. This vaccine is not effective in people formerly infected or sensitized with environmental mycobacteria. Previous meta-analysis studies indicate that BCG has variable range of protection from 0 to 80 percent against pulmonary TB, but is very effective against severe disseminated forms such as meningitis and miliary form of TB. Despite many research and develop new generation vaccine against TB, BCG vaccine still remains as the only effective vaccine because many efforts to replace it with better ones were unsuccessful.

Streptococcus pneumoniae is one of the major causes of vaccine - preventable diseases worldwide. Current pneumococcal vaccines consist of serotype specific capsular polysaccharide antigen and do not offer full clinical protection against pneumococcal diseases. Due to such limitations, a new generation of protein-based pneumococcal vaccines is being developed. The objective of this study was to determine the distribution of gens encoding five protein antigens including pneumococcal histidine triad D and E (phtD, phtE), rlr- regulated gene A (rrgA), Autolysin (lytA) and Pneumococcal surface protein C (pcpC) among pneumococcal isolates collected from nasopharyngeal specimens in healthy children.
A total of 43 pneumococcal isolates were collected from nasopharyngeal specimens of healthy children attending the kindergartens in Ardabil province. The strains were identified using optochin susceptibility and bile solubility testes and further confirmed by amplification of capsular polysaccharide A gene (cpsA). PCR was used for screening the presence of pcpC, phtD, phtE, rrgA and lytA genes.
81.4 % of isolates were found to contain at least one of the tested genes. lytA, pcpC, phtE, phtD and rrgA were detected in 70, 60, 39.5, 35 and 25.5 percent of isolates, respectively. The results showed that the genes were not distributed consistently among the isolates and for obtaining a full coverage pneumococcal vaccine, multiple choices of these antigens should be included.

Breast cancer is claimed to be a common cancer amongst women. Estrogen receptors are over-expressed in breast cancer and susceptible to anti-estrogenic effects of tamoxifen. Tamoxifen resistance is a major problem in breast cancer treatment. It has been shown that allicin is an organosulfur compound that is effective in apoptosis induction and cell death in various tumor cell lines. Methylsulfonylmethane (MSM) is non-toxic to the human body whose effect on several cancer lines has been studied. In this study, we assessed the allicin, methylsulfonylmethane and their combined effects on breast cancer cell line (MCF7).
Breast cancer cell lines were cultivated in RPMI-1640 and CD44± cells were separated using magnetic activated cell sorting (MACS). Then, the effect of different concentrations of allicin, methylsulfonylmethane and their combination were investigated on the isolated cells using MTT, clonogenic assay and Acridine orange/ Ethidium bromide staininig methods.
Allicin had cytotoxicitic consequence on breast cancer cells and its combination with methylsulfonylmethane increased the cytotoxicity and number of apoptotic cells compared to the other groups. Lower colonies were seen in CD44- treated cells in MSM/allicin group compared to CD44 Cells which implies that sensitivity of CD44-cells was higher compared to the CD44 cells.
In this study, we found that allicin and MSM have anticancer effect inhibiting the growth of breast cancer; but combination of low concentrations of allicin with MSM may be more effective in the treatment of breast cancer cells. So, allicin and MSM, as natural products, can be used for medical purposes due to their cytotoxic effect and their availability.

Group B streptococci (GBS) are the major cause of neonatal and maternal infections. They are susceptible to penicillin, ampicillin and first-generation cephalosporins. However, resistance to other antibiotics such as erythromycin and clindamycin is common among GBS strains. The aim of this study was to evaluate the antimicrobial activity of allicin against colonizing GBS strains in vitro. Garlic extract was prepared and allicin was purified using semi-preparative HPLC procedure. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of allicin were determined for 52 GBS strains using microdilution method in Todd Hewitt broth medium. MIC of allicin was 64-128 µg/mL (MIC90 = 128) and MBC of allicin was 128 to 512µg/mL (MBC90= 256) for GBS strains. The results of this study showed that allicin can inhibit growth of GBS in vitro. Further studies on allicin might be worthy of evaluation as a therapeutic agent in treatment of GBS infections.

Brucellosis is one of the most common zoonotic diseases in Iran. In most cases، the diagnosis of brucellosis is difficult not only because of its clinical similarity to many infectious and noninfectious diseases، but also because diagnostic methods often fail to detect organisms. PCR is a rapid and safe diagnostic method applied to the diagnosis of brucellosis. The purpose of this study was to determine the sensitivity and specificity of PCR for diagnosis of human brucellosis by using serum samples. This study which was done to evaluate diagnostic tests included30 serum samples from patients with clinical presentation of brucellosis with positive Wright test and serum samples of30 healthy people with negative Wright test. These samples were examined by PCR. PCR results were positive for 15 samples of the patients group in comparison with 4 samples from the 30 healthy subjects. The sensitivity and specificity of PCR were 50% and 86. 6%، respectively. Although in some studies، the preferred sample for diagnosis of brucellosis was serum، in this study، PCR on serum samples did not indicate high sensitivity and specificity in diagnosis of brucellosis. Hence، using a combination of methods for diagnosis of human brucellosisis suggested.

The early-onset form of GBS (Group B Streptococci) disease typically occurs in the first 24 hours of life, with fulminant sepsis or pneumonia and has associated to high mortality (5-20%) and morbidity. In prenatal infections GBS is transmitted vertically to the newborn during labor and delivery from the vagina of a typically asymptomatic colonized woman. Preventive strategies can be done with screening program and this study has been done for determination of carriage prevalence and antimicrobial resistance of GBS in pregnant women of Ardabil. For determination of carriage prevalence 420 pregnant women selected stratified proportionally from 11 clusters of obstetric clinics of Ardabil. Sampling was done in pregnant women at 35-37 week's gestation with a vaginal and rectal swab for culture. Swabs were inoculated into a selective broth medium (Todd-Hewitt broth with colistin, 10mg/L and nalidixic acid 15 mg/L = LIM broth), incubated overnight at 35-37°C, and subcultured onto sheep blood agar. Isolated bacteria identified by standard microbiological tests. Out of 420 subjects 62 positive cultures were established (14.8%), 19 of them (4.5%) from anus, 19 of them (4.5%) from vagina and 24 of them (5.8%) from both.All of isolates were sensitive to Ampicillin and Vancomycin. There were 1 case of resistance 15 case of semi sensitivity and 46 cases of sensitive versus Erythromycin, these pattern also checked for Clindamycin, and results were respectively 11, 5, 46. All isolated GBS were sensitive to penicillin among them 3 (4.83%) isolates showed reduced susceptibility. Because of high prevalence rate; we recommend screening of all pregnant women for Group B Streptococcus at 35-37 week's gestation with a vaginal and rectal swab. Based on antibiogram drug of choice for treatment is Ampicillin, and in cases of drug hypersensitivity Vancomycin may be choice.