Why is Delta such a worry? It’s more infectious, probably causes more severe disease, and challenges our vaccines

A global challenge to controlling the pandemic The Delta variant is more transmissible, probably causes more severe disease, and current vaccines don’t work as well against it. WHO warns low-income countries are most vulnerable to Delta as their vaccination rates are so low. New cases in Africa increased by 33% over the week to June 29, with COVID-19 deaths jumping 42%. There has never been a time when accelerating the vaccine rollout across the world has been as urgent as it is now.

Source: Why is Delta such a worry? It’s more infectious, probably causes more severe disease, and challenges our vaccines

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