Community surveillance of COVID-19 by village health volunteers, Thailand

To control the increasing spread of coronavirus disease 2019 (COVID-19), the government of Thailand enforced the closure of public and business areas in Bangkok on 22 March 2020. As a result, large numbers of unemployed workers returned to their hometowns during April 2020, increasing the risk of spreading the virus across the entire country. In anticipation of the large-scale movement of unemployed workers, the Thai government trained existing village health volunteers to recognize the symptoms of COVID-19 and educate members of their communities. Provincial health offices assembled COVID-19 surveillance teams of these volunteers to identify returnees from high-risk areas, encourage self-quarantine for 14 days, and monitor and report the development of any relevant symptoms. Despite a significant and recent expansion of the health-care workforce to meet sustainable development goal targets, there still exists a shortage of professional health personnel in rural areas of Thailand. To compensate for this, the primary health-care system includes trained village health volunteers who provide basic health care to their communities. Village health volunteers visited more than 14 million households during March and April 2020. Volunteers identified and monitored 809 911 returnees, and referred a total of 3346 symptomatic patients to hospitals by 13 July 2020. The timely mobilization of Thailand's trusted village health volunteers, educated and experienced in infectious disease surveillance, enabled the robust response of the country to the COVID-19 pandemic. The virus was initially contained without the use of a costly country-wide lockdown or widespread testing.