Dr Zuleyka Zevallos Retweeted Dr. Tara C. Smith
'If this particular exemption is legitimate, then Biels’ friend should be even more invested in maintaining herd immunity — a level of immunity in the population high enough to prevent the spread of infections — to protect the child.' -Dr @aetiologyhttps://twitter.com/aetiology/status/1140694431181488128 …
Dr Zuleyka Zevallos added,
2:05 AM - 18 Jun 2019
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