@mlipsitch - Twitter Profile Analysis

Analysis of 200 tweets by Marc Lipsitch, from 15 Jun 2021 to 19 Sep 2021.

@mlipsitch twitter profile photo

Marc Lipsitch

verified twitter profile @mlipsitch

Infectious disease epidemiologist and microbiologist, aspirational barista. mlipsitc@hsph.harvard.edu Director @CCDD_HSPH Tweets in personal capacity.

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10,678 tweets
3,969 favourites
2 tweets per day
2009 since
1,621 following
5,517 listed
Boston, MA location

Top Tweets by @mlipsitch

Marc Lipsitch
HSPH Faculty Will Help Launch New CDC Center for Disease Forecasting | News | The Harvard Crimson https://t.co/UC9SXfPtyb
17 Sep, 2021 - 08:45 PM UTC
Marc Lipsitch
Important study suggesting higher Delta severity (hospitalization) with an unusually clearly written discussion covering many issues of methodology https://t.co/PGZrfYdwTy
31 Aug, 2021 - 11:42 AM UTC
Marc Lipsitch
Important data. First indication with Delta that despite comparable Ct values, vaxed breakthru cases likely less infectious than unvaxed cases. https://t.co/03xoLnrWoZ
23 Aug, 2021 - 02:14 AM UTC
Marc Lipsitch
Seems like good advice
21 Aug, 2021 - 08:50 PM UTC
Marc Lipsitch
New with @binikolay @SCauchemez @EmilyGurley3 and others https://t.co/bfMsfNNNw7 Assessing the feasibility of Nipah vaccine efficacy trials based on previous outbreaks in Bangladesh
20 Aug, 2021 - 01:10 PM UTC
Marc Lipsitch
The Strategic Advisory Group of Experts on Immunization (SAGE) @WHO is taking applications to be considered for membership. https://t.co/af15lQX9u3 . Incredibly important role.
20 Aug, 2021 - 11:51 AM UTC
Marc Lipsitch
Thank you Scott. Big mission ahead https://t.co/B5rL0mVd2V
18 Aug, 2021 - 02:17 PM UTC
Marc Lipsitch
Excited to start a secondment to @CDCgov to co-lead the establishment of the Center for Epidemic Forecasting and Outbreak Analytics. Fantastic team of @dylanbgeorge @rebeccajk13 @cmyeaton + CDC colleagues. https://t.co/p332IYHKPI
18 Aug, 2021 - 01:23 PM UTC
Marc Lipsitch
As often happens, the headline is too simple for the more subtle message of the article https://t.co/8IFag27igQ
13 Aug, 2021 - 01:27 AM UTC
Marc Lipsitch
Covid-19 Breakthrough Infections in Vaccinated Health Care Workers | NEJM https://t.co/uwTAtifStK
28 Jul, 2021 - 10:00 PM UTC
Marc Lipsitch
https://t.co/hvzTa32KhO just out from @WHO Guidance on conducting vaccine effectiveness evaluations in the setting of new SARS-CoV-2 variants INTERIM GUIDANCE 22 JULY 2021
26 Jul, 2021 - 11:00 AM UTC
Marc Lipsitch
At the risk of boiling down too much and certainly losing some detail, one way to summarize this wonderful thread is that when we think about vaccine effectiveness, we should think of 4 key variables: 1 which vaccine, 2 age of the person, 3 how long after vax, 4 vs what outcome. https://t.co/auZN25HUsx
20 Jul, 2021 - 09:21 PM UTC

Top Retweets by @mlipsitch

Eric Topol
This week, the @NEJM will be publishing these and more data on 3rd Pfizer shots for > 1 million Israelis age > 60, according to @CNN @elizcohencnn https://t.co/dMjTDbCYDo and @IsraelMOH's Alory-Preis and @MiloLabWIS will be presenting @US_FDA's advisory committee
11 Sep, 2021 - 08:52 PM UTC
Veli-Pekka Kivimäki
Finland will revoke the 2m/6ft COVID safety distance rule, and the common joke now is that people can go back to the traditional 3-4m Finns are used to.
06 Sep, 2021 - 11:54 AM UTC
Miguel Hernán
1/ Vaccine safety: We compared excess adverse events after #COVID19 vaccination (Pfizer-BioNTech) and after documented #SARSCoV2 infection. https://t.co/PNyCTqkq0t Take-home message: Low excess risk of adverse events after vaccination, higher after infection. Some thoughts👇
25 Aug, 2021 - 10:19 PM UTC
Monica Gandhi MD, MPH
Virological characteristics of SARS-CoV-2 vaccine breakthrough infections in health care workers. What would you expect from a symptomatic breakthrough causing cold/flu symptoms? That your immune response (antibodies/T cells in nose/respiratory tract) https://t.co/90iO5wvcic
23 Aug, 2021 - 01:43 AM UTC
Amihai Glazer
@jsm2334 @mlipsitch @CT_Bergstrom That is not the only data from Israel showing decline in efficacy. See e.g. data on efficacy by date of vaccination and age of vaccinated. https://t.co/utd0ED1HFr
19 Aug, 2021 - 03:15 AM UTC
Rajeev Venkayya MD
US-led biosurveillance efforts have had mixed success. Seeing this all-star team of @mlipsitch @dylanbgeorge @cmyeaton @rebeccajk13 gives me hope that we'll finally achieve the prediction, detection & situational awareness capabilities that have eluded us for so long. 1/ https://t.co/K6tIU3YCeM
19 Aug, 2021 - 02:17 AM UTC
Rochelle Walensky, MD, MPH
An important step for @CDCgov & #PublicHealth. The new Center for Forecasting and Outbreak Analytics will predict, connect & inform based on modeling & forecasting expertise to provide real-time info in response to public health threats. https://t.co/d5ZsJtecnM https://t.co/X6FuPWx22y
18 Aug, 2021 - 04:04 PM UTC
Cure CFS (and long-COVID, etc.)
@mlipsitch How much does this data tell us? Only 4X severe case rates in unvaccinated vs. vaccinated over 60 yr old in Israel. Our healthcare workers started getting vaccinated before Israel. I'm concerned about the 60+ year old HCW who are 8 months since vaccination https://t.co/SznrtBUTJY
13 Aug, 2021 - 07:15 AM UTC
CCDD at Harvard Chan
CCDD is honored to be a @wakingup Foundation grantee. Thank you for supporting our work to improve modeling, policy decisions and training in infectious diseases! https://t.co/xjkeOY1Urp
14 Jul, 2021 - 04:57 PM UTC
CCDD at Harvard Chan
Congrats @michaelmina_lab, @MALifeSciences awardee! Funding supports crucial work on advanced immunological testing for clinical/public health surveillance. https://t.co/8m1o7JUXnm
13 Jul, 2021 - 01:35 PM UTC
Steve Herman
“Americans who have been fully vaccinated do not need a booster shot at this time,” say @CDCgov and @US_FDA in a joint statement.
09 Jul, 2021 - 12:37 AM UTC
Joël Mesot
Congratulations, dear @TanjaStadler_CH, for this award and thanks again for your continued commitment in the 🇨🇭National #COVID19 Science Task Force. https://t.co/Xd30ObU1VP
08 Jul, 2021 - 02:13 PM UTC
Bill Hanage
👇🏼👇🏼👇🏼👇🏼 https://t.co/6p9hkHfHn8
06 Jul, 2021 - 11:35 PM UTC
Carl T. Bergstrom
This morning we lost a great scientist and great human being. I don't know quite how to speak to his memory just yet. There's no single story that captures what I would like to say, no single piece of his work that comes close to summarizing the whole. https://t.co/nVVWf1w2oT
04 Jul, 2021 - 11:47 PM UTC



31 tweets
146 replies

Twitter Client

134 Twitter Web App
66 Twitter for iPhone

Tweet Times


Tweet Days



2 - MauSantillana
2 - CT_Bergstrom
1 - ChristoPhraser
1 - HarvardChanSPH
1 - societyforepi
1 - JaimeYassif
1 - giorgiogilestro
1 - RELenski


89 - mlipsitch
3 - MiriamvGool
3 - nataliexdean
2 - meher_k_prakash
2 - vercheckt
2 - hildabast
2 - PienaarJm
2 - erlichya
1 - JoshRosenau


1 - #preprint


2 - @rebeccajk13
2 - @WHO
1 - @_MiguelHernan
1 - @CAUSALab
1 - @nytimes
1 - @LeeKShaffer
1 - @EvaRumpler
1 - @KeyaJoshi3
1 - @courageoussail

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