Diseases, Conditions, Syndromes

CDC internal investigation probes first batch of COVID-19 tests

The earliest batch of COVID-19 tests distributed by the US Centers for Disease Control and Prevention (CDC) exhibited false positive reactivity of negative controls due to flaws in assay design and contamination in one of ...

Vaccination

WHO spots problems at Russian vaccine plant

The World Health Organization said Wednesday it had uncovered problems at a Sputnik V COVID-19 vaccine production site which Moscow insisted had been resolved.

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