Published on in Vol 7, No 7 (2021): July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/27621, first published
.
1 Yemen Field Epidemiology Training Program, Ministry of Public Health and Population, Sana'a, Yemen
2 National Influenza Control Program, Ministry of Public Health and Population, Sana'a, Yemen
3 Department of Community Medicine, Public Health and Family Medicine, Faculty of Medicine, Jordan University of Science & Technology, Irbidjord, Jordan