KARACHI: At least four people with underlying health conditions have died of COVID-19 at a major Karachi hospital in the past two weeks, as experts report an unusual spike in infections during the city’s peak summer season.

All four fatalities occurred at the Aga Khan University Hospital (AKUH), where doctors say they are seeing a steady increase in admissions linked to the coronavirus— a trend they describe as “unexpected” at this time of year.

“In the past two to three weeks, we have seen a significant increase in COVID cases,” Prof. Dr. Syed Faisal Mahmood, a professor of infectious diseases at AKUH, told Arab News, confirming the death of four people during the past two weeks.

The surge, he said, was happening in late spring with temperatures exceeding 40 degrees Celsius.

COVID-19, caused by the SARS-CoV-2 virus, is a highly contagious respiratory illness that was first detected in late 2019 and declared a global pandemic within months. While the virus typically spreads more easily in colder months due to increased indoor activity and lower humidity, experts say its spread during summer in Karachi is a rare deviation from past seasonal patterns.

Mahmood said most infected individuals have been coming to the hospital with mild symptoms, such as sore throat, cough, body aches, and fever, but the virus remains dangerous for older adults and those with weakened immune systems.

“Like in previous years, this year the severe cases of COVID are mostly being seen in people who are older, especially those above 65, or those with weak immune systems,” he said.

“Among these COVID cases, there are some patients who have been hospitalized, and there have also been some deaths,” he added.

Mahmood added that while routine testing is no longer required for everyone with symptoms, caution is essential.

“If you suspect that you have COVID or any other cold or cough-related infection, it is better that you wear a mask,” he advised. “We recommend wearing a mask for at least five to ten days so that others do not get infected.”

The infectious diseases expert also urged caution for those in close contact with the elderly.

“If you are caring for someone who is elderly, then please do not visit them if you are feeling unwell, or at least wear a mask,” he said. “Please take care of yourself, and we hope that there will not be a major further increase in COVID cases.”