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How Proposed Brazilian Nasal Spray Vaccine Against Covid-19 Could Work

RIO DE JANEIRO, BRAZIL - A vaccine with no needle, no pain and no crying - this is the proposal of Brazilian scientists developing a nasal spray immunizer against the novel coronavirus. The vaccine, which has been under development since April 2020, has already shown good results in tests with mice and should be approved by the end of this year (if all goes well).

The concept of . . .

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