RIO DE JANEIRO, BRAZIL - As countries make their efforts to obtain vaccines with the arrival of batches from different pharmaceutical companies, the presence of Covid-19 seems to be reinforced with the Delta variant which keeps the eyes of the Americas on it. At the same time, Cuba advances in the efficacy of its clinical trials for a vaccine.
These and five other keys about this week's coronavirus in the Americas:
"We are very concerned"
The World Health Organization (W.H.O.) pointed out in its most recent report that there are already 71 million confirmed cases . . .
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