u/cccalliope

The WHO is still calling the Andes Hantavirus limited transmission through close contact

The WHO is still calling the Andes Hantavirus limited transmission through close contact

Despite full knowledge that the Epuyen outbreak had an Ro of 2.12 in line with Covid and that it was spread easily at a distance and through casual social contact, and the full knowledge that infected people on the cruise ship had no close contact with the infected people, WHO today is still unwilling to admit this virus transmits efficiently with casual contact.

https://www.who.int/news-room/events/detail/2026/05/20/default-calendar/hantavirus-in-focus-i-what-we-know-and-what-it-means

"In May 2026, WHO was notified of a multi‑country cluster of hantavirus infections linked to an expedition cruise ship. As of 13 May, 11 cases, including three deaths, had been reported, associated with Andes virus—a strain capable of limited human‑to‑human transmission through close contact.

u/cccalliope — 9 hours ago

'No season anymore': Viruses are running amok in Northern California

First article about respiratory viruses going all year round. Of course Monica Ghandi seven years later attributes it to immunity debt. Big surprise /s. I think this will go the way of climate change. People will go from that couldn't possibly happen to oh, yeah, it's completely normal with no transition.

https://www.sfgate.com/bayarea/article/rsv-northern-california-22264981.php

u/cccalliope — 14 hours ago

Hantavirus Patient Ordered to Stay in Quarantine Despite Desire to Leave

"Ms. Perryman said she and the 17 other passengers were told during a video conference call with federal officials on Sunday that if they did not remain at the unit voluntarily, they would receive a mandatory quarantine order keeping them there.

Her order came on Monday, authorized by Jay Bhattacharya, acting director of the Centers for Disease Control and Prevention. Citing federal public health law, it requires her to remain in the Nebraska facility for 21 days after her arrival, a period that expires on May 31."

https://archive.is/jPKad

u/cccalliope — 1 day ago

If experts within one week can stop the WHO and CDC from pretending Hantavirus is not easily spread why won't a single one stand up for Covid?

We hear from WHO today that experts have come forward to insist they treat Hantavirus according to the recent studies and to use precautionary principle. WHO previously said they wouldn't use evidence of the study proving airborne easy transmission along with the fact that on the ship it was spread through casual contact.

It only took a few days of experts coming forth publicly to show the studies for them to make the essential decision to rate all known exposed people as high risk and for the CDC to send public health to home monitoring people's home twice a day. Both of these decisions allow the U.S. who refused to take precautionary action to stop the spread from the highest transmission day, the first day of mild fever which people on their own would not catch, to put in place a protocol that can actually contain the outbreak.

If that's all it took, a few days of articles and appearances from several experts simply showing the studies that the CDC and WHO said they were going to ignore, why would not a single expert do the same for hundreds of studies that show the unsustainability of reinfection for Covid? It's the same question we ask over and over, what is it about Covid that the entire world would rather be disabled or dead than admit it's unsustainable with the let it rip protocol.

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u/cccalliope — 4 days ago
▲ 15 r/hantavirusoutbreak+1 crossposts

CDC has made the right changes to contain the outbreak for U.S.

The CDC is having people isolating in their homes wear a respirator if they are near others in the house. Also and most importantly they say a health department worker will come to the house twice a day in person to check on them. This is crucial and actually allows the initial rise in temperature which is believed to be the most contagious time to be caught before household members are exposed. This is a huge change from the scouts honor of taking one's own temperature and not wearing a respirator when out of the room.

https://www.cdc.gov/hantavirus/php/emergency-guidance/index.html#:~:text=Coordinate%20any%20urgent%20or%20necessary,home%20and%20away%20from%20others

General precautions

Health departments should advise all individuals with high-risk exposure to modify their activities during the monitoring period to protect their household members and communities as follows:

  • Practice good hand hygiene
  • Ensure good ventilation
  • Wear a respirator or well-fitting mask that covers the mouth and nose, if indoors with others
  • Maintain distance
    • Avoid kissing, hugging, or other intimate contact
    • Avoid sharing a bedroom with anyone
  • Avoid exposing others to bodily fluids
    • Avoid sharing items that may be contaminated (e.g., toothbrushes, cigarettes/vapes/hookah, or unwashed towels, bedding, or clothing, etc.)
    • Avoid sharing food out of the same plate or bowl, eating from the same utensil, or sharing beverages
  • Delay nonessential medical or dental appointments
    • Coordinate any urgent or necessary care with the health department in advance and notify the healthcare facility

Monitoring

  • Monitoring by the health department should occur twice daily, in person
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u/cccalliope — 3 days ago

Hantavirus Doesn’t Spread Easily, but Officials May Be Downplaying Risks

https://www.nytimes.com/2026/05/14/health/hantavirus-spread-risk.html

"Close, sustained contact.

That, health officials have repeatedly said, is the only way that the Andes hantavirus, which caused an outbreak on a cruise ship and has gripped the world’s attention, spreads among people.

“You have to be in close contact with someone who has a lot of symptoms,” Dr. Jay Bhattacharya, acting director of the Centers for Disease Control and Prevention, said in an interview on Fox News.

But scientists who have studied hantaviruses for decades are far less certain about how the virus might behave.

They agree with health officials that the Andes virus is not particularly contagious and is unlikely to spur a bigger outbreak. But they said research has shown that under certain circumstances, the virus can be transmitted without direct contact.

“It’s important to be honest scientifically and communicate that, because otherwise you lose credibility,” said Steven Bradfute, a viral immunologist and hantavirus expert at the University of New Mexico.

In an interview, Dr. Tedros Ghebreyesus, director general of the World Health Organization, acknowledged that officials have emphasized close contact as the way the virus spreads to avoid panicking people over rarer possibilities.

“It’s very difficult to explain to people saying, ‘OK, this is the exception, this is the norm,’” he said. “When you say the exception, they might still think that that’s something frequently happening as well.”

The hantavirus outbreak that began on the Dutch cruise ship MV Hondius last month has thus far sickened at least nine people and killed three. Many of the roughly 150 passengers, including 18 in the United States, are being closely monitored in quarantine. The remaining were given a set of instructions to avoid spreading the virus to others including: take your temperature daily, don’t fly commercial and try to use your own bathroom.

On CNN’s “State of the Union” on Sunday, Dr. Bhattacharya could not recall when some passengers who disembarked on April 24 in St. Helena, an island in the Atlantic Ocean, had arrived on American soil. None had symptoms at the time of their travel, he said, so officials had not seen a need to alert the public or trace contacts.

“The virus doesn’t spread unless somebody has active symptoms,” he said.

That, too, is not certain, although some scientists believe people may be most contagious just as they are developing symptoms.

Some labs have studied hantaviruses for decades, but there is still much that’s not known about them because they grow slowly and are difficult to analyze genetically.

Hantaviruses are naturally found in rodents. The Andes virus, found primarily in Argentina, where the cruise ship began its journey, is the only hantavirus species known to spread among people. But scientists were slow to acknowledge that possibility.

“It was very difficult to convince people of that, even here in Argentina,” said Valeria Martinez, a virologist at the National Institute of Infectious Diseases in Buenos Aires.

In the largest outbreak characterized so far, in Epuyén, Argentina, Dr. Martinez and her colleagues carefully traced transmission patterns among 34 cases and 11 deaths between November 2018 and February 2019.

The study confirmed that the virus does not spread easily: None of 82 health workers who cared for patients became infected, even though many of them did not wear protective gear.

But the researchers also identified what they called “super-spreading events,” in which a single person spread the virus to several others. The outbreak began after a man who became infected from rodents developed a fever, and attended a birthday party with 100 guests.

“He was there only 90 minutes because he was feeling ill,” Dr. Martinez said.

Within three weeks of the event, five people at the party had become ill. One of those five soon died, and his wife most likely passed the virus to another 10 people at his wake. In all, six of 34 cases in the outbreak had no direct contact with those who were ill, and one seems to have become infected after simply saying hello as they crossed paths.

“That’s not close contact, and it’s also not prolonged contact,” said Joseph G. Allen, director of the Healthy Buildings program at the Harvard T.H. Chan School of Public Health.

Studies so far suggest that the disease is most contagious when people are carrying a lot of virus, perhaps just as they are starting to feel sick. But there have also been too few outbreaks large enough to be sure of that.

“We have so little data that it’s really hard to say anything concrete or definitive,” said Kartik Chandran, a virologist at the Albert Einstein College of Medicine.

Still, the fact that there have been very few cases should in and of itself reassure people that the virus is not very contagious, he and other experts said. After weeks of being cloistered together on the ship, only 11 of the roughly 150 passengers became infected, Dr. Tedros noted. “You can see how the virus actually is not really as efficient as Covid,” he said.

One person in the Argentina outbreak became ill after sharing a hospital room with a hantavirus patient, but again, had no physical contact.

Hantavirus typically infects people when they breathe in virus particles aerosolized from rodent droppings. That fact, some experts believe, leaves open the possibility that person-to-person transmission could possibly occur through the air too.

“I don’t understand why we are so reluctant to acknowledge the inhalation route when we’re talking about person-to-person transmission,” said Linsey Marr, an expert in airborne transport of viruses at Virginia Tech.

“Airborne transmission is certainly the simplest explanation in those cases,” she said of the Argentinians who had no direct contact with patients.

Dr. Tedros of the W.H.O. said his organization had not referred to the findings about the birthday party spread because they have not been replicated by other studies and because close contact is the most common way the virus spreads.

But Gustavo Palacios, a virologist at the Icahn School of Medicine at Mount Sinai and an author on the paper, disagreed with that stance.

“Our paper is important because it helps define the outer boundary of what Andes virus can do under favorable transmission conditions,” he said. “Most events will not look like that, but public-health guidance still has to account for that possibility.”

In the United States, the C.D.C. did not issue any guidance or statements on the hantavirus outbreak until late on Friday, and did not hold a news briefing till Saturday, nearly a month after the first passenger died. It still describes transmission as requiring close or intimate contact.

The C.D.C. appears to have designated an arbitrary measure of closeness, acknowledging the threshold as “not absolute.” It has cited being at a distance of less than six feet for longer than 15 minutes, out of the Covid playbook, as an indication of risk.

In public, some U.S. health officials have shown uncertain command of the facts of the current outbreak. Speaking about the first two people who died from the virus on the Fox News interview, Dr. Bhattacharya incorrectly said the couple had been in their 80s (they were 70 and 69) and added, “People who were very close to them, the roommates, a doctor who was caring for them, they’re the ones who got symptomatic.”

He was wrong about the details. C.D.C. scientists were not on the ship to investigate the outbreak, but W.H.O. officials who led the investigation are still working out how other passengers became infected.

The third person who died, an 80-year-old German woman, was not a roommate of the first two or even on the same deck. But she may have shared meals or been in other spaces with them, said Dr. Maria Van Kerkhove, the W.H.O.’s director of epidemic and pandemic preparedness.

Andrew Nixon, a spokesman for the Department of Health and Human Services, which oversees the C.D.C., said federal agencies have “been fully engaged from the outset.”

He did not respond to questions about the scientific basis for the six-foot guidance or about Dr. Bhattacharya’s errors.

“Attempts to second-guess this response overlook the ongoing work being done to protect the health and well-being of American citizens,” he said.

The W.H.O. does not include the six-foot distance in its guidance and its description of the outbreak acknowledges the scarcity of data, including on transmission.

“We are learning, and we will continue to learn, I think, for quite some time,” Dr. Van Kerkhove said. “The book is not written.”

u/cccalliope — 5 days ago

I'm seeing the same kind of mishandling that we saw with Covid

This morning we wake up to 12 Dutch healthcare workers who are now in quarantine because they didn't use proper biohazard protocol with Hantavirus infected material. This is exactly how an outbreak that could have been contained turns into something dangerous.

If their quarantine is at home, their caretakers and family members will get infected at initial stages before they are too sick to test. Why? Because WHO and CDC all say the virus needs prolonged contact to spread when we know from studies all it needs is casual bringing in a tray of food without a respirator. And if the twelve are in an institutional setting who is to say the healthcare workers for these twelve won't make the same mistakes with infected material the original twelve made.

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u/cccalliope — 8 days ago

Just a vent about the powers that be reaction to Hantavirus

I've read most of the news now, no worries, this isn't going to be anything more than a small outbreak. Why? Because Hantavirus isn't easily spread like covid or flu. Well, there is one variant that supposedly spreads human to human, but it's so rare. Well, actually this variant on the cruise ship does happen to be that strain, but, you know, it's hard to spread. Sure we are trying to contact the people that we allowed off the ship who are now spread out to many countries, but that's just good sense precaution.

So then I take a look at studies and first thing I find is a superspreader of the Andes version of Hantavirus from a birthday party. Apparently the lead author Palacios did a further note that said one of the people got it after a brief greeting that lasted only second at a distance of 0.5 meters.

"Our findings traced the first person-to-person transmission event to a birthday party with approximately 100 guests. The index patient (Patient 1) attended the event for 90 minutes and was reportedly symptomatic at the time, with fever and malaise. Five persons (Patients 2 through 6) who had been seated close to Patient 1 reported onset of symptoms consistent with ANDV hantavirus pulmonary syndrome between 17 and 24 days after the party (Fig. S3). Patient 2 was the most likely source for six infections in other persons during the early prodromal phase because of his active social life. Patient 2 died 16 days after symptom onset, and his spouse (Patient 9) was febrile while attending his wake. An additional 10 persons who attended the wake and were in close contact with Patient 9 became ill between 14 and 40 days after the wake for Patient 2.

The remaining 12 patients were each in contact with at least one previously symptomatic patient. Four patients (Patients 10, 29, 33, and 34) may have been infected by more than one person. The mean (±SD) serial interval (the time from symptom onset in a primary case to symptom onset in an epidemiologically linked secondary case) was approximately 23±7 days (Fig. S4). Incubation periods ranged from 9 to 40 days."

https://www.nejm.org/doi/full/10.1056/NEJMoa2009040

u/cccalliope — 12 days ago

We often on this forum use the AVMA guidance to choose foods that are good for our very delicate breed, but they also give guidance on what not to feed our pets. Here is a recent update from them for dogs and cats that adds bird flu guidance.

https://www.avma.org/resources-tools/avma-policies/raw-or-undercooked-animal-source-protein-cat-and-dog-diets

Raw Diets for Dogs and Cats

The AVMA recognizes public interest in feeding raw diets to dogs and cats. However, the AVMA discourages feeding any raw or undercooked animal-sourced proteins (e.g., meat, poultry, fish, egg, milk*) to dogs and cats because of their risk to human and animal health. The AVMA supports the production and feeding of diets that have been processed using methods that reduce or eliminate the risk of illness due to pathogenic contaminants.

Pasteurization or cooking until the product containing the animal-sourced protein reaches a safe minimum internal temperature adequate to reduce or eliminate pathogens have been the traditional methods used to reduce or eliminate pathogens in animal-sourced protein. However, the AVMA recognizes that other scientifically validated technologies can also reduce or eliminate the risk of human and animal illness due to pathogenic contaminants.

Animal-sourced proteins of concern include beef, pork, poultry, fish, and other meat from domesticated or wild animals, as well as milk* and eggs. Several studies reported in peer-reviewed scientific journals and product recalls have demonstrated that raw or undercooked animal-sourced protein may be contaminated with a variety of pathogens, including Salmonella spp, Campylobacter spp, Clostridium spp, Escherichia coliListeria monocytogenes, highly pathogenic avian influenza (HPAI) virus, Mycobacterium bovis, and enterotoxigenic Staphylococcus aureus. Dogs and cats may develop foodborne illness after being fed animal-sourced protein contaminated with the organisms listed above if adequate steps are not taken to reduce or eliminate pathogens. Apparently healthy dogs and cats can have subclinical infections with these organisms and pose a risk to other animals and people, especially young, elderly, pregnant, and immunocompromised individuals. People handling contaminated raw pet foods are also at risk of becoming sick.

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u/cccalliope — 18 days ago