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Mark J. Mulligan, MD, FIDSA @mjmull

Vaccinologist, Infectious Diseases Specialist, Consultant, Previously Vaccine Center Director and Chief of Infectious Diseases & Immunology

Joined January 2011
  • Tweets 2,152
  • Following 731
  • Followers 918
57 Photos and videos
This is so sad. Misinformation undermining vaccine confidence, and children suffer and die—-> U.S. Poised to Lose Measles Elimination Status as Utah Outbreak Nears One-Year Mark wsj.com/us-news/us-measles-e…

U.S. Poised to Lose Measles Elimination Status as Utah Outbreak Nears One-Year Mark

The spread of the highly contagious disease persists at levels not seen in the U.S. since the early 1990s.

wsj.com
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nytimes.com/2026/04/25/healt…

AIDS Creeps Back in Parts of Zambia, a Year After U.S. Cuts to H.I.V. Assistance

A once-robust H.I.V. treatment and prevention system, credited with saving hundreds of thousands of lives, has begun to crumble.

nytimes.com
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Thanks.—->nytimes.com/2026/03/16/healt…

Judge Strikes Down Kennedy’s Vaccine Policies

Ruling on a lawsuit brought by several prominent medical organizations, a district court said the federal government had not based its decisions on science in limiting Covid shots and revising the...

nytimes.com
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nytimes.com/2026/03/17/world…

An ‘Unprecedented’ Outbreak of Meningitis Raises Alarm in Britain (Gift Article)

Two people have died in an outbreak of meningococcal disease. Many cases were traced to a nightclub in Canterbury that is popular with students at the University of Kent.

nytimes.com
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Mark J. Mulligan, MD, FIDSA retweeted
Mark J. Mulligan, MD, FIDSA@mjmull
12 Dec 2025
The erosion of Vaccine confidence and Vaccine uptake, because of the undermining of evidence-based, lifesaving vaccination policy by HHS, FDA and CDC, has lethal consequences—> Hundreds Quarantined in South Carolina as Measles Spreads nytimes.com/2025/12/11/well/… via @NYTimes

Hundreds Quarantined in South Carolina as Measles Spreads

The outbreak shows no signs of slowing, likely because of the affected area’s “lower-than-hoped-for vaccination coverage,” a state health official said.

nytimes.com
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Dangerous ideas. In my view he is not fit to be leading ACIP. nytimes.com/2026/01/23/healt…

Rejecting Decades of Science, Vaccine Panel Chair Says Polio and Other Shots Should Be Optional

Dr. Kirk Milhoan, a pediatric cardiologist who leads the Advisory Committee on Immunization Practices, said a person’s right to refuse a vaccine outweighed concerns about illness or death from...

nytimes.com
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These deaths need to be reviewed carefully before they are attributed to the COVID-19 vaccine. It is premature to make new policy.—->The FDA vaccine division director says the agency will be changing its approach for respiratory-illness vaccines. wsj.com/health/healthcare/fd…

FDA Official Pledges New Vaccine Standards

RFK Jr. ally cites childhood deaths after receiving Covid-19 shot, but provided no evidence or details.

wsj.com
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Will a new mutated flu strain cause a rough winter? bbc.com/news/articles/c2dr8g…

New flu virus mutation could see ‘worst season in a decade'

Leading flu experts say they will not be surprised if this year's is the worst flu season for a decade.

bbc.com
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Interesting wsj.com/opinion/operation-wa…

Opinion | Operation Warp Speed Aimed at Covid and Hit Cancer

Melanoma patients who got an mRNA vaccine for the virus saw median survival times double.

wsj.com
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Mosquito-Borne Illness Rarely Seen in U.S. Is Suspected on Long Island nytimes.com/2025/09/25/nyreg… via @NYTimes

Mosquito-Borne Illness Rarely Seen in U.S. Is Suspected on Long Island

Chikungunya, which is endemic in parts of South America, Africa and Asia, may be the cause of a woman’s illness.

nytimes.com
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Why vaccination of the community is critical to protect the vulnerable—->L.A. County child dies of rare measles complication years after infection washingtonpost.com/health/20…

L.A. County child dies of rare measles complication years after infection

The child contracted measles before being old enough to vaccinate, officials said — adding that the case highlights the importance of community immunity.

washingtonpost.com
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#5 Dear FL, Without vaccine mandates your communities will lose immunity. Naïve (unvaccinated) children will suffer, miss school, incur medical expenses. The immense cost-effectiveness of vaccines will be lost. Florida: don’t be naïve.
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Mark J. Mulligan, MD, FIDSA retweeted
Mark J. Mulligan, MD, FIDSA@mjmull
7 Sep 2025
#4 Dear FL, Think of this: Without vaccine mandates, vacationers and retirees will decide to stop visiting and retiring in contagious Florida. Your economic metrics will fall as your infectious disease rates rise. Florida: please don’t be naïve, be vaccine-experienced, be safe.
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Mark J. Mulligan, MD, FIDSA retweeted
Mark J. Mulligan, MD, FIDSA@mjmull
6 Sep 2025
Dear Alabama - please do not copy Florida,which is considering putting children’s lives at risk in exchange for political gain——>RFK Jr. allies claim momentum as Florida targets vaccines: ‘Fight is coming’ washingtonpost.com/health/20…

RFK Jr. allies claim momentum as Florida targets vaccines: ‘Fight is coming’

Florida’s plan to end school vaccine mandates, announced by Surgeon General Joseph A. Ladapo, has energized vaccine skeptics in other states.

washingtonpost.com
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Mark J. Mulligan, MD, FIDSA retweeted
Mark Warner
@MarkWarner
5 Sep 2025
Based on everything we heard yesterday and everything we’ve seen from him in the past couple months, it’s as clear as ever: RFK Jr. must resign or be fired.
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#2 Dear FL, Without vaccine mandates, your vaccination rates will fall below the herd immunity thresholds for diseases. For example, measles is so highly contagious that 95% of people must be vaccinated to achieve herd immunity. FL vacations will become dangerous for us. Love, GA
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#3 Dear FL, Without vaccine mandates and herd immunity, retirees in FL, with aging immune systems, will be at increased risk for disease and death from surging vaccine-preventable diseases. Our states’ older adults will no longer want to retire in dangerous FL. Love, NY, NJ & CT
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Mark J. Mulligan, MD, FIDSA retweeted
Mark J. Mulligan, MD, FIDSA@mjmull
5 Sep 2025
#2 Dear FL, Without vaccine mandates, your vaccination rates will fall below the herd immunity thresholds for diseases. For example, measles is so highly contagious that 95% of people must be vaccinated to achieve herd immunity. FL vacations will become dangerous for us. Love, GA
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