Publication: Case-Control Study of Use of Personal Protective Measures and Risk for SARS-CoV 2 Infection, Thailand
Issued Date
2020
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eng
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video/youtube
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Mahidol University
Bibliographic Citation
Emerging Infectious Diseases. Vol. 26, No. 11, (November 2020), 2607-2616
Suggested Citation
Pawinee Doung-ngern, Rapeepong Suphanchaimat, Apinya Panjangampatthana, Chawisar Janekrongtham, Duangrat Ruampoom, Nawaporn Daochaeng, Napatchakorn Eungkanit, Nichakul Pisitpayat, Nuengruethai Srisong, Oiythip Yasopa, Patchanee Plernprom, Pitiphon Promduangsi, Panita Kumphon, Paphanij Suangtho, Peeriya Watakulsin, Sarinya Chaiya, Somkid Kripattanapong, Thanawadee Chantian, Emily Bloss, Chawetsan Namwat, Direk Limmathurotsakul Case-Control Study of Use of Personal Protective Measures and Risk for SARS-CoV 2 Infection, Thailand. Emerging Infectious Diseases. Vol. 26, No. 11, (November 2020), 2607-2616. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/79485
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Title
Case-Control Study of Use of Personal Protective Measures and Risk for SARS-CoV 2 Infection, Thailand
Author(s)
Pawinee Doung-ngern
Rapeepong Suphanchaimat
Apinya Panjangampatthana
Chawisar Janekrongtham
Duangrat Ruampoom
Nawaporn Daochaeng
Napatchakorn Eungkanit
Nichakul Pisitpayat
Nuengruethai Srisong
Oiythip Yasopa
Patchanee Plernprom
Pitiphon Promduangsi
Panita Kumphon
Paphanij Suangtho
Peeriya Watakulsin
Sarinya Chaiya
Somkid Kripattanapong
Thanawadee Chantian
Emily Bloss
Chawetsan Namwat
Direk Limmathurotsakul
Rapeepong Suphanchaimat
Apinya Panjangampatthana
Chawisar Janekrongtham
Duangrat Ruampoom
Nawaporn Daochaeng
Napatchakorn Eungkanit
Nichakul Pisitpayat
Nuengruethai Srisong
Oiythip Yasopa
Patchanee Plernprom
Pitiphon Promduangsi
Panita Kumphon
Paphanij Suangtho
Peeriya Watakulsin
Sarinya Chaiya
Somkid Kripattanapong
Thanawadee Chantian
Emily Bloss
Chawetsan Namwat
Direk Limmathurotsakul
Abstract
We evaluated effectiveness of personal protective measures against severe acute respiratory disease coronavirus 2 (SARS-CoV-2) infection. Our case-control study included 211 cases of coronavirus disease (COVID-19) and 839 controls in Thailand. Cases were defined as asymptomatic contacts of COVID-19 patients who later tested positive for SARS-CoV-2; controls were asymptomatic contacts who never tested positive. Wearing masks all the time during contact was independently associated with lower risk for SARS-CoV-2 infection compared with not wearing masks; wearing a mask sometimes during contact did not lower infection risk. We found the type of mask worn was not independently associated with infection and that contacts who always wore masks were more likely to practice social distancing. Maintaining >1 m distance from a person with COVID-19, having close contact for <15 minutes, and frequent handwashing were independently associated with lower risk for infection. Our findings support consistent wearing of masks, handwashing, and social distancing to protect against COVID-19.