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Pfizer
Opinion
04.25.2021
Studies in widely vaccinated populations, such as those in Israel and the UK, have confirmed in vivo the protection promised by different vaccines. The risk of vaccinated individuals transmitting the...
Article
11.22.2020
No fewer than 180 candidate vaccines against Covid-19 are being developed around the world and 40 are currently in clinical trials. How do these vaccines work? And how can we measure their...