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SÃO PAULO - Sinovac Biotech Ltd.'s Covid-19 vaccine, which scientists hope can help fight the pandemic in developing countries, has exceeded the 50% threshold for effectiveness in late-stage studies in Brazil, which means that regulators…

Parents of children with disabilities have learned four lessons. Because of this, they recommend being aware of the signs that allow early diagnosis to seek specialists and information about treatments. Also, seek advice on how to…