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So far existing vaccines are effective against all known variants.

For a certain value of "effective"...

Seychelles brings back curbs despite vaccination success

The Seychelles, which has fully vaccinated over 60% of its population against Covid-19, is bringing back restrictions amid a rise in cases.

The archipelago of nearly 100,000 people recorded close to 500 new cases in the three days to 1 May and has about 1,000 active cases.

A third of the active cases involved people who had had two vaccine doses, the country's news agency said.

The rest had either had a single dose or were unvaccinated.

The Seychelles, which relies on tourism for much of its income, began vaccinating its population in January using Chinese-made Sinopharm vaccine doses donated by the United Arab Emirates.

By mid-April about 60% of the vaccine doses administered in the country were Sinopharm, with the rest Indian-made AstraZeneca vaccine doses, Bloomberg reported.

The Sinopharm and AZ vaccines have shown to be less efficient than the mRNA vaccines, particularly against the South-Africa variant, which is most prevalent in the Western part of the Indian Ocean. French health authorities are not using the AZ vaccines in the islands of Maore and Réunion: only Pfizer or Moderna.

The other thing the Seychelles situation is telling us: with more contagious variants, even a full vaccination rate of 60% is not enough in itself to prevent the spread of the virus, which makes it even more challenging to reach the mythical "herd immunity".

by Bernard on Sun May 9th, 2021 at 08:56:19 AM EST
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