Cancer patients may shed viable COVID-19 virus for 2 monthsA New England Journal of Medicine study yesterday of cancer patients with COVID-19 demonstrated viral RNA shedding for up to 78 days and live virus for up to 61 days, suggesting extended infectiousness in patients whose immune system is suppressed.Live-virus shedding in patients who are not immunocompromised is well-documented, but little is known about how long immunocompromised patients—including those receiving cancer treatments—are contagious.
The presence of viral RNA does not always correlate with transmissibility, and previous studies have demonstrated lengthy periods of viral RNA shedding after patients are no longer infectious.Scientists at Memorial Sloan Kettering Cancer