Alerts
The alerts on these pages are based on the monitoring of publicly available data. While some alerts reference false claims, others are included to indicate gaps in knowledge, concerns, speculation, and other trending narratives. Inclusion in reporting is based on reach and velocity of spread and on whether conversations may impact health behaviors and decisions.
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New studies prompt questions about the newborn vitamin K shot
Medium Impact
Two recent studies found that parental refusal of the newborn vitamin K shot more than doubled between 2017 and 2025,…
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Measles deaths prompt questions about MMR vaccine timing and effectiveness
High Impact
Recent measles-related deaths in New York, Pennsylvania, and Wisconsin have prompted online questions about the MMR vaccination schedule and vaccine…
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Flooding across the southern and western U.S. prompts safety concerns
Medium Impact
Heavy rainfall and high tides caused flooding across parts of the southern and western U.S., prompting emergency declarations, evacuations, and…
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Early flu activity prompts questions about vaccine effectiveness and timing
High Impact
Rising flu activity across the U.S. is prompting online questions about vaccination as the 2026–27 flu season gets underway. Some…
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Melanoma vaccine trial prompts hopeful reactions to mRNA technology
Low Impact
Results from a clinical trial of a personalized mRNA vaccine for melanoma have generated largely positive online reactions. The vaccine,…
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Pennsylvania measles advisory prompts questions about vaccination and pregnancy
Medium Impact
An October 19 Pennsylvania Department of Health advisory about measles during pregnancy, following reports of at least six babies born…
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Unconfirmed plague reports in Russia revive concerns about another pandemic
Low Impact
Reports of a possible pneumonic plague death at a Russian research institute prompted online speculation about the risk of another…
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Flu vaccine rollout continues to spark questions about eligibility, benefits, and safety
Medium Impact
As flu vaccination continues for the 2026–2027 respiratory virus season, online conversations are highlighting questions about vaccine eligibility, safety, effectiveness,…
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Rollout of first mRNA flu vaccine prompts questions about access and eligibility
Medium Impact
Following its FDA approval in August, the first mRNA flu vaccine is now available for the 2026–2027 flu season, prompting…
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College student deaths fuel concerns about cychlorphine, kratom, and drug safety
High Impact
The deaths of two University of Mississippi students have prompted online concerns about drug safety on college campuses. Kratom products…
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Florida dengue outbreak prompts questions about risk and prevention
Medium Impact
An ongoing dengue outbreak in Florida is driving online questions about where infections are occurring, how dengue spreads, and how…
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Fourth death in Pennsylvania sparks discussion about severe measles complications
High Impact
Pennsylvania reported a fourth measles-associated death, an 18-year-old who was unvaccinated and died from acute disseminated encephalomyelitis (ADEM), a rare…
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Woman’s death sparks discussion about kratom safety and regulation
Medium Impact
A lawsuit filed by the family of a 55-year-old California woman who died after using a kratom product is drawing…
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Newly identified tick-borne virus sparks confusion about U.S. risk
Low Impact
Researchers in China identified a previously unknown tick-borne virus, called Asian longhorned tick nairovirus (ALTNV), in people with a history…
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Record vaccine exemption rates fuel debate about school vaccination requirements
High Impact
New national data show that exemptions from school vaccination requirements among kindergartners reached a record high during the 2025–2026 school…
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Updated COVID-19 vaccines prompt questions about eligibility and access
Medium Impact
The FDA approved updated COVID-19 vaccines for the 2026–2027 respiratory virus season. The vaccines target the XFG variant and are…