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. 2021 Mar 16;22(6):3004. doi: 10.3390/ijms22063004

Figure 1.

Figure 1

Fecal microbiota transplantation (FMT) treatment during COVID-19 and post-COVID-19 pandemic. (A) The four possible FMT donor and recipient combinations include: (i) asymptomatic COVID-19 donor and asymptomatic COVID-19 recipient; (ii) asymptomatic COVID-19 donor and COVID-19-negative recipient; (iii) COVID-19-negative donor and asymptomatic COVID-19 recipient; and (iv) COVID-19-negative donor and COVID-19-negative recipient. (B) Donors and recipients that have tested negative for COVID-19 could have never had COVID-19 or have recovered from COVID-19. Recovering donors and recipients could have a negative nasopharyngeal test and a negative stool test, or a negative nasopharyngeal test and a positive stool test.