Federal officials are concerned results from the U.S. trial of the AstraZeneca COVID-19 vaccine may contain outdated information.
The Data and Safety Monitoring Board said late Monday, it's concerned the study doesn't give a complete view of the vaccine's efficacy.
Cleveland Doctor Jon Davidson told the KDKA Radio morning show, this combined with the vaccine's issues in Europe is hurting public confidence.
"A survey somewhere in one of the European countries that said 60% of people will not take the AstraZeneca vaccine because of all this press. So, we already have people in our country that are very hesitant."
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Last week following multiple countries briefly suspending the vaccine, A European health agency said it's overall safe, despite a possible link to rare blood clots in those with low platelet counts.
The U.S trial of the AstraZeneca vaccine showed it was 79% effective at preventing symptomatic cases of COVID-19 and found no serious side effects.
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AstraZeneca plans to file for emergency use authorization with the FDA in the coming weeks.