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.

“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).