Experimental: group A treatment group:
Bromhexine hydrochloride tablets, arbidol hydrochloride granules:
Standard treatment refers to the latest edition of pneumonia diagnosis and treatment scheme for novel coronavirus infection. Arbidol hydrochloride granules is recommended but not enforced to use
Recombinant human interferon α2b spray:
Standard treatment refers to the latest edition of pneumonia diagnosis and treatment scheme for novel coronavirus infection
Favipiravir tablets
Active comparator; group B control group:
Drug: arbidol hydrochloride granules
Standard treatment refers to the latest edition of pneumonia diagnosis and treatment scheme for novel coronavirus infection. arbidol hydrochloride granules is recommended but not enforced to use
Drug: recombinant human interferon α2b spray
Standard treatment refers to the latest edition of pneumonia diagnosis and treatment scheme for novel coronavirus infection