Khan's spokesman Dr Shehbaz Gill said that the prime minister has just a slight fever and cough.
Waqar Younis said that he is worried that players in Pakistan might face mental health issues if cricket continued to be played for more time in the COVID-19 situation.
The uncapped pair are the newcomers in captain Steven Smith's 15-man squad, which includes 10 players with less than 10 Tests, as Australia look to rebuild following a string of retirements after the Ashes defeat in England.
