Abstract
The number of confirmed COVID-19 cases continues to rise around the world, which is a huge threat to the safety of people and the social economy. Despite the introduction of vaccines, effectively preventing and controlling the epidemic, especially in protecting vulnerable populations, remains a big challenge for countries worldwide. By summarizing the trajectory of several officially reported COVID-19 cases, we found that because the COVID-19 primary routes of transmission consist of respiratory droplets, aerosols and close contacts it remains containable with public health measures. Public health measures to contain the outbreak do not rely on the healthcare institution and government agencies alone but require the concerted efforts of the public with sustained vigilance and social responsibility. People who are showing symptoms or have had suspected contact need to keep wearing masks and be quarantined in time to prevent further chains of transmission.
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