HealthNews
Covid vaccination cut risk of adverse heart events, large study finds

Recent Covid vaccination appears to have broad cardioprotective effects, according to a new study, which found reduced risk of events like heart attacks and stroke, hospitalization, and death in people who had received the vaccine.
The study, published in JAMA Internal Medicine on Monday along with several other Covid-related papers, followed more than 1 million veterans who received flu vaccinations at Veterans Affairs health care facilities in 2024; about a third of them also received a Covid vaccine.
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Infection with SARS-CoV-2 is known to increase the risk of adverse cardiac events. In the eight months after the veterans were vaccinated, the researchers found, those who received Covid vaccines (either mRNA or another type) had a roughly 38% lower risk of Covid-associated major cardiovascular events. This benefit was greatest for those 75 and older and those with chronic conditions like kidney and lung disease.
To the researchers’ surprise, Covid vaccination was also tied to a nearly 24% reduction in all-cause cardiac events — not just those with a documented Covid diagnosis. The authors said this could translate to prevention of approximately 3,500 major cardiac events and 2,400 deaths annually per 1 million people.
Ziyad Al-Aly, a doctor and clinical researcher at Washington University in St. Louis, who led the study, chalks this up to higher rates of Covid infections in the broader community. He spoke to STAT about cases where individuals who felt “under the weather” did not test for Covid at the time, but then weeks later ended up in the emergency room with a cardiovascular event. “What that really means is that those [events] are actually likely related to SARS-CoV-2, that were never recognized to be so in the first place,” he said.
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Robert Califf, a cardiologist and former commissioner of the Food and Drug Administration, wrote an accompanying commentary on Al-Aly’s findings. Califf spoke to STAT about why Covid vaccination may protect the heart saying, “There are many, many studies now that show that vaccinations of various types seem to reduce the risk of chronic diseases, including cardiovascular disease … this is not inconsistent with what the other studies have shown.” He agreed with Al-Aly’s thoughts, saying, “it’s also worth keeping in mind that the testing environment has changed a lot, so knowing for sure who had a subsequent infection, that’s probably the shakiest of the whole thing.”
Al-Aly stressed to STAT that Covid is still prevalent in the general population. “Despite the fact that the virus has evolved and things have mellowed down, and we no longer think of Covid infection as consequential, there is still actually a tidal wave of SARS-CoV-2 that continues to circulate in the population,” he said. “Much of it is only unrecognized, leading to heart problems. Much of it is unlinked or unattributed to SARS-CoV-2, because people are not testing.”
While Al-Aly’s findings indicate cardioprotective benefits of Covid vaccines, these results may surprise some because vaccine-related myocarditis — inflammation of the heart muscle — was an early concern about mRNA formulations. The side effect was seen mostly in young men. Notably, studies have found that vaccine-related myocarditis is significantly milder than myocarditis resulting from an actual Covid infection.
Researchers have described multiple potential connections between Covid and heart health, including increased inflammation triggered by the infection and direct damage to heart tissues from the virus. Infection also increases risk of long Covid, or other persistent symptoms. Nevertheless, Covid shot uptake in older adults is less than half that of the uptake of flu vaccines.
“I think when you have more than half of the population, even high risk, who are not electing to get updated, people are not viewing it as a medical necessity and a way to prove what the risks and benefits are would be to do large randomized trials. I thought the new NIH was going to answer those kinds of questions, but it doesn’t seem to be doing that,” said Califf.
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Another new study in JAMA Internal Medicine, led by Ryan Wiegand and researchers at the Center for Disease Control and Prevention, evaluated the effectiveness of 2024-2025 Covid vaccines in the U.S. Among those who were vaccinated, there was a reduced likelihood of Covid-associated emergency room or urgent care visits. For adults 18 years and older, vaccine effectiveness was 41% against critical illness.
Bill Hanage, a professor of epidemiology at Harvard University not involved in these studies, told STAT he found it striking that “over the short term, the Covid vaccines in the Wiegand study are roughly as effective as flu vaccines.” He added, “It is only recently that influenza has overtaken Covid as the most significant respiratory cause of illness and death in the United States. And it’s worth mentioning that those were pretty bad flu seasons. Covid vaccines are still protective and still keep people out of hospital.”
A study funded by the European Centre for Disease Prevention and Control also released on Monday in JAMA Network Open, indicating similar effectiveness for Covid vaccines in the 2025-2026 season for older European adults. The researchers, including numerous European epidemiologists and public health experts, evaluated individuals 60 years old and above across multiple European countries and found approximately 55% effectiveness in protecting participants from symptomatic disease in the two months after vaccination. While vaccine uptake has decreased in Europe, the authors told STAT that the new annual vaccines are updated based on “COVID-19 vaccine strain(s) that match circulating viruses and thereby are likely to be more effective.” The low uptake rate and high effectiveness of vaccines, the paper says, “suggests missed opportunities for preventing symptomatic COVID-19 among unvaccinated vulnerable groups.”
When asked about how individuals should consider their own decision on taking a Covid vaccine, Califf told STAT, “If you are the kind of person that was skeptical about vaccines or unsure, if you are low risk, there’s an argument to be made that the benefits are small enough that on an absolute scale it’s not one of the most important health decisions that you would make.” But he also noted, “The evidence says that the benefits outweigh the risks. … My general view for me and people I care about is to get the update, and for people who are high risk, definitely get the update.”
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Similarly, Al-Aly noted to STAT, individuals will have to weigh their own personal pros and cons of getting vaccinated. When it comes to heart health, especially for older adults and those with comorbidities, he said, “forgoing vaccinations, that’s leaving a lot of protection on the table.”
HealthNews
NH man hospitalized for weeks after contracting tick-borne illness
A Concord man has become seriously ill after contracting a tick-borne illness.John Reagan, 66, is an avid outdoorsman, but a tick bite has put him in the hospital with Powassan virus for the past few weeks.Reagan’s friend, Tom Wright, said Reagan felt worn down the day he went to Concord Hospital for the tick bite. The next day, he couldn’t speak and had a hard time moving. After two weeks, he was moved to Massachusetts General Hospital and has needed a ventilator to help him breathe.>> Download the free WMUR app to get updates on the go <> Download the free WMUR app to get updates on the go <<
"I talked to his wife this morning," Wright said. "He was moving his fingers and moving his toes, and even his eyelids were moving. So, they have given him a drug to help him wake up and come out of this."
According to the New Hampshire Department of Health and Human Services, three to four people are diagnosed with Powassan virus each year.
There are no vaccines to prevent Powassan virus or medications to treat it. The virus can cause symptoms ranging from fever, headache and fatigue to confusion, seizures and paralysis.
Doctors provide supportive care for those suffering from serious symptoms.
Reagan's family and friends said they're working hard to get the word out about Powassan virus and other tick-borne illnesses. They urged people to be vigilant when headed outdoors and always check themselves and pets for ticks.
HealthNews
Kennedy Orders Woman to Stay in Hantavirus Quarantine, Despite C.D.C. Recommendation
A cruise ship passenger who was exposed to hantavirus in early May is still being held at a quarantine facility in Nebraska, against her wishes and against the recommendation of a medical review from the Centers for Disease Control and Prevention.
On Monday, Health Secretary Robert F. Kennedy Jr., a staunch proponent of medical freedom, signed an order to continue quarantining Angela Perryman, 47, even though others who had been held at the facility have, since May 31, been allowed to return to their homes if they wished to do so.
In a telephone interview with The New York Times, Ms. Perryman, who has tested negative for the virus and says she has not had any symptoms, expressed anger and frustration. She said she learned of Mr. Kennedy’s decision when a copy of his order was slipped under the door to her room.
After a hearing to dispute her quarantine order, Dr. Michael Bell, the C.D.C.’s quarantine medical reviewer, recommended on Thursday that Ms. Perryman be allowed to return home for the remainder of her 42-day quarantine, with remote symptom monitoring once daily and access to 24-hour help “in the event she develops symptoms.”
HealthNews
Heart protection from COVID shots remains amid updates, study finds
Although most Americans have eschewed seasonal COVID-19 vaccines, the updated shots continue to show significant protection against cardiovascular disease, especially for those over age 75 and those with underlying medical conditions. That’s according to a new study that pulled data from more than 1 million patients in a US Department of Veterans Affairs (VA) health system.
The finding builds on previous data showing that the vaccines significantly lower the risk of COVID-19-associated cardiovascular risks, particularly heart attacks and strokes. But it wasn’t a given that the benefit would hold up over time—as the virus evolved, the vaccines were updated, population-level immunity increased from previous infection and vaccination, and risk of severe outcomes fell.
The new study, published in JAMA Internal Medicine, found that the 2024–2025 COVID-19 vaccine continued to protect against COVID-19-associated “major adverse cardiovascular events” (MACE), which include cardiovascular death, heart attack, stroke, and hospitalization for heart failure.
The study included electronic medical record data from 1,039,659 patients in the VA’s St. Louis Health Care System. All of the patients received a seasonal flu shot between September 3, 2024, and December 31, 2024, with some also getting a COVID-19 vaccine at the same time. Of the 1,039,659 patients, 349,085 received both shots, while 690,574 got just the flu shot. The latter group acted as the control group for the study.
After eight months of follow-up, the researchers looked for documented COVID-19 cases and compared MACE events among the two groups. Overall, the COVID shots’ vaccine effectiveness against MACE events was 38 percent. In terms of absolute numbers, the benefit is modest. The study estimated that the shots dropped the rate of COVID-19-associated MACE events from about 5 in 10,000 to 3 in 10,000. Looking across subgroups, the benefits were strongest among those aged 75 and older and those with underlying health conditions.
Neglected benefits
The researchers, led by epidemiologist Ziyad Al-Aly at the St. Louis VA, also looked at MACE and deaths without documented COVID-19 cases. Here, the benefits of COVID-19 vaccines were stronger, suggesting COVID-19 cases may have been missed or undiagnosed. The shots appeared to drop the rate of MACE from 382 per 10,000 to 358, and the rate of death from 223 to 207.
“Extrapolating these estimates to a population of 1 million people, vaccination could plausibly be associated with averting approximately 2,370 MACE events and 1,580 deaths over an 8-month period,” the researchers note, though they urge caution in interpreting the finding.
The study has limitations, including that most of the US veteran population is older, White, and male, making it likely that the findings can’t be generalized to the whole population. Still, the findings indicate that the vaccines continue to offer cardiovascular protection against COVID-19, which should factor into people’s decisions on whether to get an annual COVID-19 booster. An accompanying study also published in JAMA Internal Medicine on Monday found the vaccines still directly protect against COVID-19, reducing the risk of hospitalization and critical illness by 35 percent and 41 percent, respectively.
In an accompanying editorial, Robert Califf, a cardiologist and former Food and Drug Administration commissioner, wrote that the data from the two studies “provide strong evidence of a favorable balance of benefit to risk for updated COVID-19 vaccine boosters across the population.” But, he lamented that despite that strong evidence, national views are being swayed by the “general antivaccination statements from the US Department of Health and Human Services,” which is run by anti-vaccine Health Secretary Robert F. Kennedy Jr.
Only 17.5 percent of adults and 22.6 percent of people over age 65 in the US have gotten the 2025–2026 COVID shot, according to federal data.
“The politicization of COVID-19 vaccination and messenger RNA vaccines in general has taken a toll on the longevity and functional status of those in the US,” Califf wrote. He called for researchers to collect more data on the vaccine’s benefits and engage with the public about the findings, particularly on social media, to combat anti-vaccine rhetoric.
HealthNews
Measles case detected at SFO days before World Cup start
Travelers at the often bustling international terminal at San Francisco Airport may have been exposed to the highly contagious measles virus days before the start of the World Cup, according to a news release from the Santa Clara County Public Health Department.
The department warned that a person with measles traveled through multiple areas of SFO on June 8, including the international terminal, passport control, customs and the baggage claim area between 8:30 and 11 a.m. On the same day, between the hours of 8 and 10 p.m., the individual also visited two markets in San Jose: a Trader Joe’s store at 635 Coleman Ave. and International Halal Market at 960 E. Santa Clara St.
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Measles is a respiratory virus that can spread via airborne particles. The virus is so infectious that it can infect 90% of people who aren’t protected through either vaccination or a previous infection. Even when a sickened person leaves an area, the airborne droplets can infect unvaccinated people for up to two hours, according to the U.S. Centers for Disease Control and Prevention.
The exposures happened three days before the kickoff of the World Cup, held across U.S., Mexico and Canada through mid-July. The weekslong event is expected to bring over 250,000 travelers to the Bay Area with multiple games being played at Levi’s Stadium in Santa Clara County.
Dr. Sarah Rudman, the public health officer for Santa Clara County, said in a video that anyone who has not been vaccinated or had measles before should take steps to protect themselves if they were in those areas at those times.
“We are sharing this information so that anyone who was in these locations at the specified times can do what they need to protect their own health and the health of those around them,” she said.
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Dr. William Schaffner, an infectious disease expert at Vanderbilt University Medical Center, said health departments are watching cities hosting World Cup events closely to look for any signs of disease outbreaks that could spread as fans and teams travel for the games.
“As we looked at the World Cup events and wondered what infectious hazards might crop up, measles was at the top of the list,” Schaffner told SFGATE. “It is the most contagious virus.”
Symptoms of measles virus include a distinctive rash, fever and headache. The virus can be severe, with one in five unvaccinated people needing hospitalization. People who aren’t vaccinated may be able to get protection if they get a vaccine within 72 hours of exposure or get short-term protection via immunoglobulin, which contains antibodies for the virus. The Centers for Disease Control and Prevention estimates for every 1,000 children infected, about one to three will die from conditions related to the disease.
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Measles generally incubates between eight and 14 days, although it can incubate as long as 21 days. Dr. Matt Willis, the former officer for the Marin County Public Health, said due to the relatively long incubation time, it can take up to 42 days before health officials know for certain no one else was infected. In this case, however, Willis said it’s likely no new cases will appear if none are detected in the next 21 days.
“It is a little bit of a white-knuckle ride, when … you know large numbers of people in your community have been exposed,” he said.
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There is no cure, but two doses of the measles vaccine is very effective, providing 97% protection against the disease.
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Willis said Santa Clara’s overall high vaccination rate will likely help keep the virus from spreading, but as cases increase nationwide, California has still seen an increase in measles outbreaks this year.
“It’s partly because we’re just seeing more and more of those embers kind of landing in our community,” he said. “Occasionally they … arrive in places where small brush fires of measles can arise.”
HealthNews
DRC reports record number of Ebola cases in a single day as outbreak hits 1-month mark
Health officials in the Democratic Republic of Congo (DRC) have reported a record one-day increase in Ebola cases since the current outbreak was first detected one month ago.
The DRC Ministry of Health reported 72 new confirmed Ebola cases on June 13, bringing the total number of cases to 782. Additionally, 29 deaths were recorded, bringing to 181 the number of fatalities that have occurred in the last month.
The majority of cases are still concentrated in three provinces in the northeast part of the country: Ituri, North Kivu and South Kivu. Two new health zones, Nia-Nia in Ituri and Mabalako in North Kivu, reported cases for the first time, increasing the number of affected health zones to 31, according to the Ministry of Health.
Contact tracing remains a concern. Health officials said only 56.5% of identified contacts have been followed up on, far below the desired 90%-95% target needed to contain the outbreak, according to the World Health Organization (WHO).
DRC health officials say they’re still experiencing community hesitance as well as shortages of essential medicines and infection-control supplies.
Meanwhile, Uganda has reported 19 confirmed cases, in large part linked to cross-border transmission from the DRC, and two deaths, according to the World Health Organization.
Last week, United Nations agencies warned that children in the eastern DRC could become increasingly affected by the Ebola outbreak. The U.N. said it may be difficult to accurately track the number of children who may be affected by the outbreak due to inefficient surveillance.
Although most infections have been among adults, “as the outbreak evolves, we must be prepared for increasing household transmission which means we may see more children affected in the days ahead,” Dr. Douglas Noble, UNICEF global lead for public health emergencies and global incident manager for Ebola, said on Friday.
“These are already very vulnerable children, so the capacity for this community to absorb any additional stressors was already stretched to breaking point,” he said.
In past Ebola outbreaks in the DRC, children “made up a significant share of cases and an even greater share of deaths, with the youngest facing the highest fatality rates and many left orphaned or separated from caregivers,” Noble said.
Meanwhile, the U.S. State Department recently announced plans to provide $50 million to the Coalition for Epidemic Preparedness Innovations (CEPI), which describes itself as “a global partnership working to accelerate the development of vaccines and other biologic countermeasures against epidemic and pandemic threats,” to help develop vaccines and treatments against the Bundibugyo strain of Ebola that’s driving the current outbreak.
The State Department further said it has committed more than $270 million directly to the Ebola response, with U.S.-funded partners screening more than 6,300 people in Ituri, supporting 100 health facilities and carrying out 200 safe burials.
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