China and India both rolled out vaccines given through the nasal tissues last fall, though it’s not clear how well they may be working. Studies on the effectiveness of these vaccines have yet to be published, leaving much of the world to wonder whether this approach to protection really works in people.
In its weekly update on the pandemic, the WHO said it added XBB.1.16 as the sixth variant under monitoring on Mar 22. It also said though global cases and deaths continue to decline, some countries—including India—are reporting recent spikes in cases.
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