Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

Paragraph: It's true that a former post-doctoral fellow at Johns Hopkins University questioned the safety and effectiveness of flu vaccines in a scholarly article, but that view isn't widely accepted in the epidemiology field. Peter Doshi was a post-doctoral fellow at Johns Hopkins University School of Medicine when he published an article in the British Medical Journal in May 2013 titled "Influenza: Marketing Vaccine by Marketing Disease." Doshi argued in the article that flu vaccines could be less beneficial and less safe than once believed, and that the Centers for Disease Control and Prevention (CDC) has overstated the threat of influenza. After his fellowship ended, Doshi became an assistant professor of pharmaceutical health services at the University of Maryland School of Pharmacy, according to the school's website. Doshi's article gained widespread attention when the website Newsmax Health reported on it in May 2013. Still, Doshi's views are not widely accepted in the epidemiology field. In fact, Johns Hopkins University requires that its medical staff receive flu vaccinations each fall. The school's website says the policy is for "the safety of our patients, trainees, staff, faculty, physicians and students." Posted 10/23/14 Comments Claim: Reports have gone viral that a scientist from Johns Hopkins University said flu vaccines aren't as effective as once thought and that studies used to promote widespread vaccines are often low quality.
Johns Hopkins Scientist Questions Flu Vaccine Authorship Confirmed!