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DelNS1-2019-nCoV-RBD-OPT is aCOVID-19 vaccine developed by Beijing Wantai Biological,Xiamen University and theUniversity of Hong Kong.^[3][4][5] It is administered as a single dose intranasal spray.^[6]

On 14 December 2022, the vaccine was listed by theNational Health Commission of China as a secondarybooster dose option for people who have completed their third doses of inactivated COVID-19 vaccines for 6 months or longer.^[7]

Scholia has a profile forDelNS1-2019-nCoV-RBD-OPT(Q106522065).

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