In December 2019, the COVID‑19 virus appeared in Wuhan, Hubei Province, in China.[1,2] As of February 16, 2021, there were 109,865,149 infected people and 2,423,838 deaths due to COVID‑19 disease in the world.[3] According to WHO, COVID‑19 disease is a common enemy of humanity and is a public health emergency. This international organization advises governments to stop the virus transmission cycle by considering proper policies.[4] The following three general approaches include: mitigation approach, based on herd immunity theory,[5] active control or contamination using quarantine, separation, and social distancing[6], and suppression approach combined with mask and personal hygiene principles, such as regular hand washing and no contaminated hand contact with the face, as well as observance of public hygiene principles, such as control of sneezing and coughing and safe extermination of personal protective equipment, has so far been performed to break the transmission chain of COVID‑19 disease.[7]
کلید واژگان :covid 19, pandemic, corona virus,iran
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