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(A-D) The figure depicts the average high and low temperatures of different cities of Pakistan and the occurrence of COVID-19 from 1 June to 31 December 2020. A gradual decrease was witnessed from 14 June in Islamabad (A), from 21 June in Karachi (B), from 19 June in Lahore, and from 20 June in Peshawar (D). The re-emergence of COVID-19 positive cases was detected in November and December in Islamabad, Karachi, Lahore, and Peshawar when the average temperature dropped down below 31 °C.
