The United States’ top coronavirus doctor has warned coronavirus vaccines could end up making Covid-19 patients more seriously-ill.
White House immunologist Dr Anthony Fauci gave an update on efforts to develop vaccines at an online US Senate hearing on Tuesday, but added: ‘I must warn that there’s also the possibility of negative consequences, where certain vaccines can actually enhance the negative effect of the infection.’
Dr Fauci said the most important issue with any successful vaccine was its efficacy – ability to produce the desired result – in this case, the prevention of coronavirus infections. Explaining the key questions researchers face, Fauci continued: ‘Will (efficacy) be president or absence, and how durable will it be?’
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