- AstraZeneca trial, illness link 'unlikely' Wauchope Gazette
- US National Institutes of Health 'Very Concerned' With AstraZeneca's Vaccine Test Hiccup, Media Says Sputnik International
- NIH Worried About Side Effect in Coronavirus Vaccine Trial Medscape
- AstraZeneca's COVID-19 vaccine adverse event has NIH 'very concerned' FierceBiotech
- NIH 'Very Concerned' About AstraZeneca Vaccine Trial Side Effects Newsmax
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