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AaronRichterman's profile
Aaron Richterman, MD
Aaron Richterman, MD
Aaron Richterman, MD
@AaronRichterman

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Aaron Richterman, MD

@AaronRichterman

infectious diseases, health equity @PennMedicine. prev @BrighamWomens @GlobalHealthMGH. “His horoscopes were especially popular because they were often right”

Philadelphia, PA
scholar.google.com/citations?hl=e…
Joined July 2010

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    1. Aaron Richterman, MD‏ @AaronRichterman 24 Feb 2021

      14a. Important for those worried about b1.351. While this prelim analysis of asymptomatic infection after j&j is based on 29% completed serology data, most of the serologies from South Africa had been done.pic.twitter.com/PeFLn5jhbT

      1 reply 0 retweets 3 likes
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    2. Aaron Richterman, MD‏ @AaronRichterman 26 Feb 2021

      Aaron Richterman, MD Retweeted Eran Segal

      15. No posted pre print yet but if this holds we now have 3 lines of evidence suggesting 85-90% reduction in all infections by the mrna vaccines (moderna RCT, Pfizer UK regular screening healthcare workers, 👇🏻 Israel regular screening). H/t @EricMeyerowitzhttps://twitter.com/segal_eran/status/1365263943229452289 …

      Aaron Richterman, MD added,

      Eran Segal @segal_eran
      Israel: Vaccines may reduce infections by 88% Key in this study by the national covid center, is use of **routine testing** of nursery home workers, thus less biases Based on 8300 vaxed and 2600 non-vaxed workers under 65 y/o Note lower rise in vaxed 7-10 days after 2nd dose pic.twitter.com/68mKv5Sa3i
      1 reply 1 retweet 8 likes
      Show this thread
    3. Aaron Richterman, MD‏ @AaronRichterman 26 Feb 2021

      15a. There is a little separation in the first few days so will need to see what kind of adjustment has been made here.

      2 replies 0 retweets 2 likes
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    4. Aaron Richterman, MD‏ @AaronRichterman 28 Feb 2021

      16. On interpreting cross-sectional pcr during vaccine trials (i.e. moderna asymptomatic swabs at the time of dose 2) https://twitter.com/mlipsitch/status/1366172405119541250?s=20 …pic.twitter.com/7aHfqRYV5N

      2 replies 0 retweets 3 likes
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    5. Aaron Richterman, MD‏ @AaronRichterman 4 Mar 2021

      17. Another study with regular (weekly) asymptomatic screening of hcw finds large reduction in pcr+ after Pfizer vaccine. The case for a large transmission reduction w vaccine seems closed at this point but will keep collecting these for now.https://www.authorea.com/users/332778/articles/509881-single-dose-bnt162b2-vaccine-protects-against-asymptomatic-sars-cov-2-infection …

      1 reply 14 retweets 49 likes
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    6. Aaron Richterman, MD‏ @AaronRichterman 4 Mar 2021

      17a. At least until these stop coming on a daily basis... https://www.nytimes.com/live/2021/03/04/world/covid-19-coronavirus/its-unclear-how-easily-vaccinated-people-may-spread-the-virus-until-the-answer-arrives-scientists-urge-caution … https://www.google.com/amp/s/www.wired.com/story/we-still-dont-know-how-well-covid-vaccines-stop-transmission/amp …

      2 replies 0 retweets 14 likes
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    7. Aaron Richterman, MD‏ @AaronRichterman 9 Mar 2021

      Aaron Richterman, MD Retweeted Laura Waters

      18. Neutralizing antibodies (like those induced by vaccines) reduce infection by 50% overall and in those who become infected there are fewer symptoms, lower viral load peak, shorter infections ~> large reductions in transmissionhttps://twitter.com/drlaurajwaters/status/1369328999944568836 …

      Aaron Richterman, MD added,

      Laura Waters @drlaurajwaters
      #CROI2021 REGEN-COV vs placebo to asymptomatic #COVID19 contacts: 100% protection against symptomatic infection & 50% reduction in infection overall. All infections in active arm asymptomatic with lower peak & shorter duration viraemia, less transmission potential & FEWER AE! pic.twitter.com/oq5X5EBonk
      1 reply 2 retweets 6 likes
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    8. Aaron Richterman, MD‏ @AaronRichterman 9 Mar 2021

      Aaron Richterman, MD Retweeted Laura Waters

      18a. Same thinghttps://twitter.com/drlaurajwaters/status/1369323658821464067 …

      Aaron Richterman, MD added,

      Laura Waters @drlaurajwaters
      #CROI2021 Myron Cohen presented BLAZE-2: bamlanivimab vs placebo - 80% reduction in symptomatic #COVID9 in residents & 72% amongst high risk staff, lower viral load & shedding if infected. 4 deaths, all on placebo. Hugely exciting data for monoclonal antibodies!! pic.twitter.com/2ojbSy43Xs
      1 reply 1 retweet 2 likes
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    9. Aaron Richterman, MD‏ @AaronRichterman 10 Mar 2021

      19. Interesting study of pre-procedural asymptomatic cov2 pcr screening - 80% reduction (95% CI 56-91%) in asymptomatic infection after both doses of mrna vaccines. Similar reduction after a single dose.https://academic.oup.com/cid/advance-article/doi/10.1093/cid/ciab229/6167855 …

      1 reply 3 retweets 6 likes
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    10. Aaron Richterman, MD‏ @AaronRichterman 12 Mar 2021

      20. First observational study of household members of healthcare workers receiving mostly pfizer vax. After adjustment, 54% reduction in risk for household members (95% CI 30-70%) after both vaccine doses +14d in hcw. H/t @mugecevik https://github.com/ChronicDiseaseEpi/hcw/blob/master/vaccine_manuscript.pdf …pic.twitter.com/izXumhKISL

      1 reply 2 retweets 6 likes
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      Aaron Richterman, MD‏ @AaronRichterman 12 Mar 2021

      20a. Remember that this is not a contact tracing study and so reduction can be thought of as lower bound from the vaccinated household member since exposures may have occurred elsewhere

      8:22 AM - 12 Mar 2021
      • 3 Likes
      • Fredric Douglas Bellamy Cranky Yet Festive Snitty
      1 reply 0 retweets 3 likes
        1. New conversation
        2. Aaron Richterman, MD‏ @AaronRichterman 26 Mar 2021

          Aaron Richterman, MD Retweeted Neil Clancy

          21. Systematic surveillance in nursing homes - greater than 2 log decrease in viral loads in infected residents shortly after first Pfizer dose. Likely to be associated with large drops in transmission potentialhttps://twitter.com/ClancyNeil/status/1375421980829175809 …

          Aaron Richterman, MD added,

          Neil ClancyVerified account @ClancyNeil
          Our paper on impact of single dose #Pfizer #COVID19 #vaccine in our nursing home residents is out at Clin Inf Dis. >2-log viral load reduction in asymptomatic persons. Systematic surveillance screening, so all cases captured. @CarlosdelRio7 @walidgellad https://academic.oup.com/cid/advance-article/doi/10.1093/cid/ciab263/6188727 …
          Show this thread
          1 reply 0 retweets 1 like
          Show this thread
        3. Aaron Richterman, MD‏ @AaronRichterman 26 Mar 2021

          22. Systematic screening during nursing home outbreaks - Pfizer vaccine 63% (95% CI 33–79%) effective at decreasing infections (symptoms or no). Early during vaccination period so likely an underestimate.https://www.cdc.gov/mmwr/volumes/70/wr/mm7011e3.htm …

          1 reply 0 retweets 1 like
          Show this thread
        4. Aaron Richterman, MD‏ @AaronRichterman 29 Mar 2021

          Aaron Richterman, MD Retweeted Chise  🧬 🧫 🦠 💉

          23.https://twitter.com/sailorrooscout/status/1376512132318121990 …

          Aaron Richterman, MD added,

          Chise  🧬 🧫 🦠 💉 @sailorrooscout
          Good news! An updated study has found that ONE dose of either Pfizer’s OR AstraZeneca’s vaccine led to a 62% reduction in the risk of ANY infection and lower viral loads in those that were infected after 28 days. Long-Term Care Facility/High-Risk Setting. https://www.medrxiv.org/content/10.1101/2021.03.26.21254391v1 …
          Show this thread
          1 reply 0 retweets 3 likes
          Show this thread
        5. Aaron Richterman, MD‏ @AaronRichterman 29 Mar 2021

          Aaron Richterman, MD Retweeted CDC

          24.https://twitter.com/CDCgov/status/1376552681255399424 …

          Aaron Richterman, MD added,

          CDCVerified account @CDCgov
          A new @CDCMMWR finds mRNA #COVID19 vaccines highly effective in preventing COVID-19 among health care & other essential workers. The mRNA vaccines reduced the risk of infection by 80% after the 1st dose and 90% following the 2nd dose. Learn more: http://bit.ly/MMWR32921 . pic.twitter.com/alDyojp0v1
          1 reply 1 retweet 2 likes
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        6. Aaron Richterman, MD‏ @AaronRichterman 28 Apr 2021

          25. Really nice household transmission study (first of its kind that I've seen). ~50% decreased transmission potential among people infected 21d after first dose AZ or Pfizer. This is on top of very high reductions in infection risk. https://khub.net/documents/135939561/390853656/Impact+of+vaccination+on+household+transmission+of+SARS-COV-2+in+England.pdf/35bf4bb1-6ade-d3eb-a39e-9c9b25a8122a?t=1619601878136 …pic.twitter.com/sO1RQo2uJj

          0 replies 0 retweets 8 likes
          Show this thread
        7. End of conversation

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