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Brazil begins mass vaccine study in poor Rio neighborhood
Brazilian authorities have begun the mass immunization of Rio de Janeiro’s Mare neighborhood in a novel bid to control COVID-19 in a poor community while studying vaccine effectiveness and the prevalence of worrisome variants
https://www.washingtonpost.com/world/brazil-begins-mass-vaccine-study-in-poor-rio-neighborhood/2021/07/29/94f24118-f096-11eb-81b2-9b7061a582d8_story.html?utm_source=rss&utm_medium=referral&utm_campaign=wp_world
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