RIO DE JANEIRO, BRAZIL - Few situations illustrate so shockingly the challenge faced by the Brazilian state in dealing with the Covid-19 pandemic as the lack of oxygen in hospitals. As a result of the advance of the strain detected in Manaus, more infectious and lethal than the others, the number of severe cases of the disease has been increasing in all Brazilian regions since early this year.
Coupled with a vaccination rate that was too slow for the urgency of the moment - just over 10% of the Brazilian population has been administered one dose - the pandemic caused the collapse . . .