Pakistan is expecting another Covid-19 wave, according to medical experts. Karachi is the most affected city with 340 positive cases, raising Sindh’s positivity rate to 10.69 per cent in seven days.

Medical experts say a new variant — BA.5 — is fast spreading in other countries and had been reported in Pakistan, including Karachi.

“While other [old] sub-variants of Omicron are also being reported in Karachi, this one is more contagious since it’s a new one and has been a cause of concern in other parts of the world,” said Dr Saeed Khan, a professor of molecular pathology heading the Sindh Public Health Lab at the Dow University of Health Sciences (DUHS), while speaking with Dawn.

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“If we don’t pay heed to medical advice and start implementing the Covid-related preventive measures seriously, the spike in cases might turn into the sixth wave of coronavirus,” he said.

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“They are genetically different, which helps them transmit fast. Other reasons include waning of vaccine immunity after six months, reluctance on part of the general public to get a booster shot and absence of Covid-19 preventive measures at public places,” said Dr Khan.

According to the National Institute of Health (NIH), 204 cases of Covid-19 with a positivity rate of 1.53 per cent were reported in Pakistan today (June 22).