Dr Zafrullah Chowdhury's health condition has worsened after he developed secondary pneumonia following his bout with Covid-19 infection, said a press release circulated by Gonoshasthaya Kendra today.

He is suffering from an inflammation of the larynx along with kidney disease which requires him to undergo dialysis thrice a week.

Prime Minister Sheikh Hasina's personal physician Dr ABM Abdullah visited the public health expert yesterday to provide medical advice, added the statement.

Gonoshasthaya Kendra founder and trustee Dr Zafrullah Chowdhury tested positive for Covid-19 on May 24. He was administered treatment and later tested negative on June 16.