At least 26 doctors died from Covid-19 in June in Indonesia, prompting concerns from epidemiologists who have called for an investigation into the deaths to determine whether factors such as poor hospital care or underlying illnesses played a role in the fatalities, the Wall Street Journal reports.

The report quoted the Indonesian Medical Association as saying that at least 10 of the 26 doctors in the country who died from the coronavirus this month had received both doses of the vaccine developed by China's Sinovac Biotech.

Around 90 per cent of Indonesian doctors — nearly 160,000 in total —have been vaccinated with Sinovac’s shot, according to the association.