With the end of the annual Hajj pilgrimage to Mecca came reports of the resurgence of COVID-19 in some West African countries, such as Senegal and Togo. Mass gatherings have historically been linked to the spread of Infectious Diseases like COVID-19, cholera, influenza, norovirus infections, and meningitis. Typically, mass events are attended by a sufficient number of people to strain the planning and response resources of the host community, state/province, nation, or region where it is being held. Can mass gatherings like the Hajj be better managed to prevent outbreaks of infectious diseases like COVID-19 among returnee participants?