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Initial COVID-19 vaccines may not prevent people from getting coronavirus

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Desperation for a way to keep economies from collapsing under the weight of Covid-19 could mean settling for a vaccine that prevents people from getting really sick or dying but doesn’t stop them from catching the coronavirus.

Although a knock-out blow against the virus is the ultimate goal, early vaccines may come with limitations on what they can deliver, according to Professor Robin Shattock from Imperial College London who is leading development of an experimental shot.

“Is that protection against infection?” Prof Shattock said. “Is it protection against illness? Is it protection against severe disease? It’s quite possible a vaccine that only protects against severe disease would be very useful.”

As countries emerge warily from lockdowns, leaders are looking to a preventive shot as the route to return to pre-pandemic life.

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