People register information for receiving COVID-19 vaccines at a vaccination center in Tripoli, Libya, Aug. 11, 2021. Libya's Ministry of Health on Wednesday opened the country's largest COVID-19 vaccination center in the capital Tripoli. (Photo by Hamza Turkia/Xinhua)

A man walks out a vaccination center after receiving COVID-19 vaccine in Tripoli, Libya, Aug. 11, 2021. Libya's Ministry of Health on Wednesday opened the country's largest COVID-19 vaccination center in the capital Tripoli. (Photo by Hamza Turkia/Xinhua)

A medical worker prepares a dose of COVID-19 vaccine to a recipient at a vaccination center in Tripoli, Libya, Aug. 11, 2021. Libya's Ministry of Health on Wednesday opened the country's largest COVID-19 vaccination center in the capital Tripoli. (Photo by Hamza Turkia/Xinhua)