BK polyomavirus (BKV) reactivation in immunocompromised renal transplant patients may result in BKV-associated nephropathy and hemorrhagic cystitis. There are no suitable animal models of BKV to date, and although there are several treatment options under development, none have reached regulatory approval so far.

There are millions of fungal species, but it appears only a few hundred of them cause serious fungal infections that are responsible for an estimated 1.5 million deaths globally each year and are equally as dangerous as bacterial and viral infections. Last week, the U.S. CDC pointed the spotlight on this situation with its Fungal Disease Awareness Week.