Pfizer CEO Albert Bourla addresses a press conference after a visit to oversee the production of the Pfizer-BioNtech COVID-19 vaccine at the factory of U.S.
pharmaceutical company Pfizer in Puurs, Belgium April 23, 2021.Pfizer CEO Albert Bourla on Tuesday said the omicron variant of the virus that causes Covid-19 appears to be milder than previous strains, but also seems to spread faster and could lead to more mutations in the future.
White House chief medical advisor Dr. Anthony Fauci said reports over the weekend from South Africa suggest omicron is not as severe as initially feared, while noting that more data is needed to fully assess the risk posed by the variant. Bourla cautioned that it is difficult to draw conclusions from the wave of infection in South Africa right now. Just 5% of South Africans are over the age of 60, and younger people normally have milder cases of Covid. However, many people in South Africa are also HIV positive, which would presumably lead to more severe disease from Covid, he said.
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