Hong Kong Scientists Develop COVID-19 Vaccine Nasal Spray
Scientists from the University of Hong Kong have completed work on a special nasal spray containing a vaccine for both common flu and COVID-19: it will begin human trials next month, writes "Ukrinform".
The essence of this project is to destroy viruses, in particular COVID-19, right in the nose, from where they usually enter the human body.
If immunization against influenza using nasal sprays is already known, then the new drug, as the development scientists hope, should also provide protection against coronavirus.
Through trials on hamsters, Chinese scientists in Hong Kong have found that certain drugs used to treat infectious diseases are effective in suppressing COVID-19 symptoms.
Initially, it is planned to attract about 100 people for clinical trials of the spray vaccine. During the testing, Chinese scientists will investigate, in particular, the safety of the vaccine, as well as the optimal dose for each person. Scientists have already filed a US patent for the manufacture of such a vaccine.
As you know, not a single effective vaccine against coronavirus is ready yet, although a number of states say they are working on their own vaccines against COVID-19. But all this is still only at the stage of clinical trials.
The only vaccines registered in the world so far are the Russian Sputnik V or Gam-Covid-Vak and EpiVacCorona. The first drug was developed by the National Research Center for Epidemiology and Microbiology. N.F. Gamalei, the second - Novosibirsk State Research Center of Virology and Biotechnology "Vector". At the same time, the third phase of clinical trials for these vaccines has not been completed. At the same time, there is an international norm that a vaccine can be registered and massively used only after the successful completion of three phases of clinical trials.
According to WHO, so far only 10 vaccines are in the third stage of testing - randomized, double-blind trials among a large number of volunteers. At this stage, test participants are given not only the vaccine, but also a placebo, and neither they nor the doctors know who gets what.
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