Table 1.

The change of gut microbiome in COVID-19 patients (Gu et al., 2020b).

Title	Subject	Sample	Sequencing method	Conclusion
Alterations in Gut Microbiota of Patients With COVID-19 During Time of Hospitalization	15 COVID-19 patients	fecal samples	shotgun metagenomic sequencing	enrichment of opportunistic pathogens and depletion of beneficial symbionts
	Six community-acquired pneumonia patients
	15 healthy controls
Alterations of the Gut Microbiota in Patients with COVID-19 or H1N1 Influenza	30 COVID-19 patients	fecal samples	16sRNA
	24 influenza A patients
	30 healthy controls