m. seyedi

In the late 2019, the SARS-CoV-2 virus was identified as the cause of an outbreak of acute respiratory illness known as the COVID-19, which began to spread in the world very quickly. Preventive measures have been a significant issue in preventing the spread of COVID-19. This rapid review study was conducted to summarize selected countries' preventive policies and strategies in the East and Southeast Asia, including China, South Korea, Japan, Vietnam, and Singapore, during the COVID-19 epidemic. 

In this rapid review study, the Scopus, PubMed, Embase, and Web of Science databases were searched. The keywords applied in the search strategy were primary health care, public health, prevent* and plan, policy, program, initiative, intervention, measure, and COVID-19 in addition to the name of each country. Furthermore, we searched the World Health Organization (WHO) and the United Nations Development Program (UNDP) websites to retrieve more key sources as grey literature. The relevant data were extracted from the final studies and categorized. 

After screening, 33 studies met the inclusion criteria. Dominant measures implemented in these countries were categorized into different categories including communication and information, physical distancing, quarantine, monitoring, and testing axes. 

Education and information, extensive testing and screening, contact tracing, isolation of infected and suspected cases, and observance of physical distancing has been very effective in reducing Covid-19 transmission and its mortality.

In order to study the effect of on-farm seed priming using tap water and zinc sulfate solution with 0. 03% zinc on yield and yield components of two intermediate maturing maize cultivars، a factorial experiment was carried out in complete randomized block design with three replications in Research Farm of Bu Ali University، Hamedan، Iran in 2011. Seed priming consisted of three levels (priming with 0. 03% zinc using zinc sulfate for 16 hours، priming with tap water for 18 hours and control (no priming)) which were applied on two maize cultivars (Single cross 580 and 600). Results indicated that on-farm seed priming increased grain number per row and the number of rows per corn cob. Priming with zinc sulfate solution significantly increased seed weight، seed yield، biological yield and harvest index. Grain yield، biological yield and harvest index in priming with zinc sulfate solution increased by 11، 12. 95 and 17 percent respectively in comparison with no primed treatment. Among the two studied cultivars، Single cross 600 with greater response to priming treatments had the highest grain number while Single cross 580 out performed the other cultivar in terms of seed weight. Therefore، seed priming with zinc sulfate at planting time seems effective to improve the growth and yield of Single cross 600.