Several pharmaceutical companies around the world are working on a nasal spray vaccine for the coronavirus. This was announced by Sumiya Swaminathan, Chief Scientist of the World Health Organization (WHO), a recording of the broadcast of the briefing is available on Twitter.
Answering the question about the oral vaccine against COVID-19, the representative of the WHO stressed that currently there is no vaccine in this form: all of them are still in the form of injections. However, several nasal spray formulations are under development, Swaminathan said.
In October, it became known that Russian scientists would make a vaccine against coronavirus in the form of a spray, which is being developed at the Influenza Research Institute in St. Petersburg. Scientists are creating it on the basis of the influenza virus; the vaccine is currently undergoing preclinical tests on animals. In 2021, it is planned to test the drug with the participation of volunteers.
Earlier, the WHO said that in the event of a COVID-19 pandemic, we could talk about more than one primary infection, since the transmission of a pathogen to humans is possible from several animals. So, the coronavirus could spread through multiple sources and even at different periods of time.
As of November 23, there are more than 58.9 million people infected with coronavirus in the world, of which more than 1.39 million have died, another 37.6 million have recovered. Most of the infected are registered in the USA, India, Brazil, France and Russia.
