In this Wednesday, July 28, 2021 file photo, a health worker administers a dose of Janssen COVID-19 vaccine by Johnson & Johnson in the Medina neighborhood in Dakar, Senegal. The World Health Organization and partners said on Tuesday, Sept. 14 they hope to provide Africa with about 30% of the COVID-19 vaccines they need by February, badly missing the 60% vaccination coverage goal that African leaders had once hoped for by the end of this year.