Many thanks @tomkeene @FerroTV @lisaabramowicz1 for hosting me on @BloombergTV discussing events with JnJ vaccine why it’s on hold and the possible mechanisms of blood clots from adenovirus vectored vaccines, JnJ, AZOx, we don’t know about Russian 
Based on AZOX another adenovirus vaccine, this class of replication deficient viral vectored vaccines can stimulate anti PF4 antibodies. PF4 found in platelet granules. This activated platelets, causes platelets consumption, and then thrombotic thrombocytopenia.
Rates about 1 per 100,000 to 200,000 for AZOx, 1 per million for JnJ, we don’t know about Russian adenovirus vaccine since it bypasses stringent regulatory authorities
Decisions nations makes may depend on availability of other COVID19 vaccines. Complicating this is the antivaccine aggression from US antiscience groups and the Putin Russian Government seeking to discredit Western vaccines according to US UK intelligence
Africa and Latin America right now are mostly dependent on adenovirus vaccines: AZOx JnJ Russian. We’re accelerating a different approach, a recombinant protein vaccine with @biological_e in India 🇮🇳 accelerating 1.2 billion doses
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