Medical oxygen scarce in Africa, Latin America amid virus

Maricar Tajo, 46, who is from the Philippines but moved to Nigeria in 2007 for work, receives oxygen from a private medical service on Feb. 6 at her house as she recovers from COVID-19 in Lagos, Nigeria. (AP Photo/Sunday Alamba)

DAKAR, Senegal — A crisis over the supply of medical oxygen for coronavirus patients has struck nations in Africa and Latin America, where warnings went unheeded at the start of the pandemic and doctors say the shortage has led to unnecessary deaths.