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a fifth less potent against some mutations in B.1.617, He was speaking in an interview with British science journal Nature. Mr Gupta s team found some healthcare workers in Delhi who had been vaccinated by Covishield, a locally produced version of the Oxford-AstraZeneca vaccine, were reinfected. Most cases were tied to B.1.617. However, in laboratory tests Covishield was also found to neutralise the virus. Researchers in Germany found people who had previously been infected with Sars-CoV-2 neutralised the strain about 50 per cent less effectively. The blood of those who received two shots of the Pfizer vaccine was found to be about 67 per cent less potent against it.

South africaUnited statesUnited kingdomSouth africanRavindra guptaUnited kingdom university of cambridgeWorld health organisationஒன்றுபட்டது மாநிலங்களில்ஒன்றுபட்டது கிஂக்டம்ரவின்ற குப்தாஒன்றுபட்டது கிஂக்டம் பல்கலைக்கழகம் ஆஃப் கேம்பிரிட்ஜ்உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்