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World Coronavirus Dispatch: Researchers working on inhaled vaccines

European leaders impose targeted curbs, Jakarta eases social distancing norms, why jokes at work make more sense than ever, and other pandemic-related news across the globe

Pfizer, BioNTech Covid-19 vaccine on track for regulatory review in October
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Most vaccines in human testing require two shots for effectiveness, and developers still aren’t even sure if they’ll prevent infections.

Yuvraj Malik New Delhi
Inhaled Vaccines: The Covid-19 vaccines closest to the finish line are designed to be injected into the arm. Researchers are now looking at whether they can get better protection from inoculations that fight the virus at its point of attack — the nose and mouth.
 
Most vaccines in human testing require two shots for effectiveness, and developers still aren’t even sure if they’ll prevent infections. Scientists are hoping to generate superior immune responses with inhaled vaccines that directly target the airway cells the virus invades. An alternative to conventional jabs, sprayed and inhaled immunizations under development in the US, Britain

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