The change of season or weather did not seem to be affecting the spread of Covid-19, and the pandemic could come as "one wave" instead of multiple waves like influenza, a World Health Organization (WHO) expert said on Tuesday.
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A health worker taking a swab test of a woman, in Kolkata on Saturday.
The change of season or weather did not seem to be affecting the spread of Covid-19, and the pandemic could come as "one wave" instead of multiple waves like influenza, a World Health Organization (WHO) expert said on Tuesday.