Chameera could be ruled out of the entire Asia Cup because of a shoulder injury that he suffered during the recent Lanka Premier League, ESPNCricinfo reported.
Hasaranga, who picked up a thigh niggle ahead of the LPL final, could miss at least the first two matches in the Asia Cup.
Sri Lanka begin their Asia Cup campaign against Bangladesh on August 31 at Pallekele.
Both Perera and Fernando’s inclusion in the Lankan squad will depend on the speed of the recovery.
The Sri Lankan team management said the duo contacted COVID-19 during the latter stages of the LPL 2023.
They will have to return a negative test result to get included in the squad for the Asia Cup.
(With inputs from PTI)