Bat Reovirus as Cause of Acute Respiratory Disease and Encephalitis in Humans, Bangladesh, 2022-2023.

We report 5 patients in Bangladesh presumed to have Nipah virus infections after consuming raw date palm sap. PCR and serology for Nipah virus were negative, but high-throughput sequencing identified Pteropine orthoreovirus in archived throat swab samples and virus cultures. This batborne virus should be considered in differential diagnosis of Nipah-like illnesses.