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Covid 19 third wave approaching? Sri Lanka records four mutations of the dangerous Delta variant – Zee News
Sri Lanka s medical experts on Monday said the Delta variant of the Covid-19 which is spreading across the country has acquired…

Colombo: Sri Lanka’s medical experts on Monday said the Delta variant of the Covid-19 which is spreading across the country has acquired four mutations due to the high transmission rate but did not have any effect on vaccine efficacy.
Head of the Department…
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