The most widely circulating COVID variant worldwide is now JN.1, having overtaken the XBB family that is the target of the most recent vaccines, the European Medicines Agency said.
So far, the US Department of Agriculture has reported more than 30 herds of dairy cows infected with H5N1 influenza across nine states. But there are questions about how large the outbreak might be and whether the US can adequately track it.
The analysis also found that spikes in the number of negative tweets coincided with announcements from governments and health care authorities about vaccination.
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