For those with HIV or weak immune systems, monkeypox can be fatal -U.S. study People with severely weakened immune systems, such as those infected with HIV, can experience severe symptoms and even die from a monkeypox infection, according to a U.S. study released on Wednesday. Julie Steenhuysen Reuters

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First on CNN: Most people feel socially connected as Covid-19 precautions ease, but many still need support, survey finds | CNN

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Lots of research has been done on links between loneliness, social connection, health and well-being, but a new international survey by the analytics firm Gallup and Facebook’s parent company, Meta, aims to shed some light on exactly how connected people feel and how they connect with others.

They found that most people around the world feel a sense of social connection as Covid-19 precautions ease, but many still need support or help from others – and the factors that drive feelings of connection vary by country.

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Covid-19 vaccine study links side effects with greater antibody response | CNN

People who reported experiencing side effects to the Pfizer/BioNTech and Moderna Covid-19 vaccines such as fever, chills or muscle pain tended to have a greater antibody response following vaccination, according to new research.

Having such symptoms after vaccination is associated with greater antibody responses compared with having only pain or rash at the injection site or no symptoms at all, suggests the paper published Friday in the journal JAMA Network Open.