At the same time, both ordinary flu and COVID-19 nasal spray have been developed.
According to Gadin.Net, Korrespondent.net reports that the spray was developed by scientists from the University of Hong Kong.
The spray contains flu and coronavirus vaccines. Trials of the spray vaccine in humans may begin next month. The spray is expected to help kill viruses, including COVID-19, directly in the nose. Viruses usually enter the human body through the nose.
Initially, it is planned to involve about 100 people in clinical trials of the vaccine-spray.