SAN SALVADOR, EL SALVADOR - APRIL 08: A nurse extracts an influenza vaccine from its container on April 8, 2020 in San Salvador, El Salvador.  President Nayib Bukele declared a 30-day mandatory quarantine and curfew to control the spread of the Coronavirus. 93 positive cases have been confirmed and 5 deaths related to the virus and over 1,200 people have been arrested for violating the mandatory quarantine and curfew.  (Photo by Camilo Freedman/APHOTOGRAFIA/Getty Images)