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Two inhaled covid vaccines have been approved. Here’s what you need to know.


We can do better with better ways to protect ourselves from covid-19. While the number of covid-19 infections continues to decline – globally, weekly cases fell by about 12% in the last week – the virus remains the cause of many deaths. Last week, one person died from covid-19 every 44 seconds, Tedros Adhanom Ghebreyesus, Director-General of the World Health Organization, told journalists at a news conference on Wednesday. “Most of these deaths are avoidable,” he said.

Will inhaled vaccines replace injectable vaccines?

No. Injected vaccines tend to lead to the production of antibodies in a person’s blood and internal organs, which also provide a strong immune response to any invading virus. . It is likely that the two vaccination methods will work best when used together, says Lavelle.

Animal studies suggests that vaccination after injection into the nasogastric tube may provide the best protection against infection, known as the “primary pull” technique. Injected vaccines strengthen the immune system, and inhaled vaccines can help strengthen or prolong this system. But Lavelle stressed that we still don’t know if the method will work in humans.

Which of the two inhaled vaccines is the best?

We still don’t know. Two vaccines are used differently – one through the nose and the other by mouth. It is not yet clear which path might be the best. In theory, vaccination via either route should trigger immunity in the nose, mouth, and upper respiratory tract, including the lungs. But the protection will be strongest wherever the vaccine is distributed, Lavelle said.

Can inhaled vaccines help end the pandemic?

This is a big question, and it’s no surprise that there is no simple answer. In theory, if vaccines can help prevent infection and transmission, they could have a huge impact on covid-19.



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