This outbreak is also a reminder of something painfully obvious: global public health systems matter.
WHO coordination appears to have been effective, organized, and scientifically grounded during a rapidly evolving international situation involving multiple countries, quarantine logistics, contact tracing, and public communication.
At the same time, the weakening of the CDC through staffing cuts, funding reductions, and the broader political undermining of public health expertise looks increasingly reckless and shortsighted.
You do not dismantle fire departments because there isn’t currently a fire.
You do not weaken epidemiologic infrastructure because outbreaks are uncommon.
You maintain these systems precisely because when serious events occur, competence, coordination, and trust suddenly become indispensable.
What we are seeing now is public health professionals working hard despite political dysfunction above them, not because that dysfunction was harmless.
One of the paradoxes of public health is that successful prevention often looks unnecessary in retrospect.
When surveillance, isolation, contact tracing, and international coordination work well, people later say the concern was exaggerated because the worst outcome never occurred.
But sometimes the reason the worst outcome never occurred is precisely because those systems functioned effectively and early enough to contain it.
Unfortunately, that paradox is often poorly understood by politicians who view preparedness systems as expendable during quiet periods and cut funding, staffing, training, and research until the next crisis suddenly reminds everyone why those systems existed in the first place.
This NYT headline states the obvious, and if R congresspeople and senators were not so radicalized, they would normally join Democrats in holding this incompetent, ideology based, anti-science administration accountable:
"Hantavirus Response Shows How Trump Cuts Have Compromised U.S. Preparedness
The Trump administration has slashed funding for infectious disease research and has far fewer employees, including disease detectives, to respond to outbreaks."
For most of us, there's little cause for concern with even a tertiary exposure to those with the variant transmitted person-to-person. What does concern me, however, is that if a truly contagious virus emerges, we no longer have a functioning HHS or CDC adequately equipped to respond.
Thank you! This is a very helpful analysis of the situation. It is also a painful reminder that this administration is hazardous to our health. That concerns me deeply.
So grateful to have y'all on this. As a layperson with health anxiety, I really appreciate having access to experts who can confidently speak on things like this. Thank you.
What, exactly, does "are you around wild rodents" mean? I mean, aren't we all? Field mice, squirrels, etc.? I'm not aware that I'm near their feces in any regular way-- but I'm not an expert in rodent scat, so I certainly couldn't swear that I'm not.
Also, large cities like Rome, Istanbul, Paris, London, New York, etc. have had massive populations around rats for centuries, and no to limited history of hantavirus outbreaks.
Yes exactly. The rats have to be infected. It's not in every rat population. Re: Centuries, I agree with this, but we also don't know what we don't know. We've only known about hantavirus since 1995.
As an ICU RN in Arizona I cared for several patients with Hanta virus, all acquired in the Four Corners area and all Native Americans.
In my own hay barn which needed cleaning out a couple of times a year, gloves and an N95 mask always. I'd spray with water to keep down dust, sweep carefully and spray the area with 10% bleach. Mask and gloves stayed on until outer clothes were in the washer.
Getting barn cats drastically reduced the pack rat and mouse population (and the barn cats were healthier than any house cats I've had).
A 2018 outbreak of this strain spread through birthday party (34 infected) and a funeral (10 infected). Seems more contagious than sharing a bed or providing medical care.
Contact tracing did knock down what seemed like a relatively alarming reproduction rate thanks to quick work and a long incubation time (giving time to trace contacts). This article indicated people are likely contagious at symptom onset /febrile phase and not incubation time.
Did you happen to catch the livestream Katelyn and Marissa did earlier this week? They reiterated 2 things that the nejm article you linked also mentions: 1) the concept of a super spreader and 2) the type of close contact that this virus needs to spread.
Even in the article, they explain every close contact that likely led to the spread for that person. The first person who was sick at the birthday party infected the people who sat close to them. They suspect one of those people then infected several others "because of his active social life" , including his wife, before he died a few weeks later. At the funeral, the wife was probably being consoled and hugged by several people, and it mentions 10 of the people that attended were also in close contact with the wife outside of the funeral and got infected. Proximity appears to be a key factor, so that's what we should focus on. If there were more cases of super spreaders seen, that would complicate the situation, sure, but we have to consider all of the data and not just the outliers.
Thanks for the continuing clear and thorough coverage, and especially the positive update today. I listened to the more dire news from the podcast yesterday and considered bringing my dinner party to a screaming halt with an apocalyptic update (my take, not yours!). Glad I forebore, and will have better news to share to any anxious friends. For better (and worse), epidemiology is becoming a much more high-profile profession...
Thank you for this piece and for being such an important source of credible information. Those of us in NJ are being told today that two residents in the state were potentially exposed through air travel with someone who had disembarked from the Hondius in late April. So far the two people in NJ are not showing any symptoms. But NJ is the most crowded state in the country, yet the DOH doesn't appear to be quarantining these two people for the duration of the period from their exposure to the outside window for symptoms to appear. Do you think they should be? After we saw many of our neighbors, in states all over the country, refuse to take even the simplest precautions to try to control COVID, it's hard for me to trust that these two residents will necessarily even report symptoms in a timely way if they start happening. Wouldn't quarantining be a much safer way to monitor them?
Thanks for the clear outline of what happened and continues to happen. One thing that I, and others I know, am worried about is this: After the current administration leaves, the government will need to assess what can be done to re-create the level of safety based on science that we enjoyed prior to the DOGE/Trump actions. We know we can't just go back in time and rehire all those who were let go or put the all the same departments into place, it's just too complicated now. I'm hoping that there are some brilliant minds who will figure out the right steps to take to create a safe public health structure such that when the next pandemic happens there will be knowledge and action plans in place.
In a couple of weeks, friends are scheduled to board this very ship. Are we certain that it is being spread through human contact and not through any HVAC or otherwise aboard the ship? Would you take that cruise in two weeks?
This outbreak is also a reminder of something painfully obvious: global public health systems matter.
WHO coordination appears to have been effective, organized, and scientifically grounded during a rapidly evolving international situation involving multiple countries, quarantine logistics, contact tracing, and public communication.
At the same time, the weakening of the CDC through staffing cuts, funding reductions, and the broader political undermining of public health expertise looks increasingly reckless and shortsighted.
You do not dismantle fire departments because there isn’t currently a fire.
You do not weaken epidemiologic infrastructure because outbreaks are uncommon.
You maintain these systems precisely because when serious events occur, competence, coordination, and trust suddenly become indispensable.
What we are seeing now is public health professionals working hard despite political dysfunction above them, not because that dysfunction was harmless.
One of the paradoxes of public health is that successful prevention often looks unnecessary in retrospect.
When surveillance, isolation, contact tracing, and international coordination work well, people later say the concern was exaggerated because the worst outcome never occurred.
But sometimes the reason the worst outcome never occurred is precisely because those systems functioned effectively and early enough to contain it.
Unfortunately, that paradox is often poorly understood by politicians who view preparedness systems as expendable during quiet periods and cut funding, staffing, training, and research until the next crisis suddenly reminds everyone why those systems existed in the first place.
This NYT headline states the obvious, and if R congresspeople and senators were not so radicalized, they would normally join Democrats in holding this incompetent, ideology based, anti-science administration accountable:
https://www.nytimes.com/2026/05/07/health/hantavirus-americans-cdc.html
"Hantavirus Response Shows How Trump Cuts Have Compromised U.S. Preparedness
The Trump administration has slashed funding for infectious disease research and has far fewer employees, including disease detectives, to respond to outbreaks."
Exactly
Thank you for this calm, fact-based report. I knew we could count on you for the information we need!
For most of us, there's little cause for concern with even a tertiary exposure to those with the variant transmitted person-to-person. What does concern me, however, is that if a truly contagious virus emerges, we no longer have a functioning HHS or CDC adequately equipped to respond.
This concerns me too...
Katelyn, Thank you for your super-clear explanation of the Hantavirus situation. It's very helpful!
Thank you! This is a very helpful analysis of the situation. It is also a painful reminder that this administration is hazardous to our health. That concerns me deeply.
This post is brilliant! Thank you for the wise scientific analysis you're so good with.
So grateful to have y'all on this. As a layperson with health anxiety, I really appreciate having access to experts who can confidently speak on things like this. Thank you.
What, exactly, does "are you around wild rodents" mean? I mean, aren't we all? Field mice, squirrels, etc.? I'm not aware that I'm near their feces in any regular way-- but I'm not an expert in rodent scat, so I certainly couldn't swear that I'm not.
Ahh I could have made that clearer. This applies to contact with reservoir species (like deer mice) that are also infected, not all rodents.
Also, large cities like Rome, Istanbul, Paris, London, New York, etc. have had massive populations around rats for centuries, and no to limited history of hantavirus outbreaks.
Yes exactly. The rats have to be infected. It's not in every rat population. Re: Centuries, I agree with this, but we also don't know what we don't know. We've only known about hantavirus since 1995.
As an ICU RN in Arizona I cared for several patients with Hanta virus, all acquired in the Four Corners area and all Native Americans.
In my own hay barn which needed cleaning out a couple of times a year, gloves and an N95 mask always. I'd spray with water to keep down dust, sweep carefully and spray the area with 10% bleach. Mask and gloves stayed on until outer clothes were in the washer.
Getting barn cats drastically reduced the pack rat and mouse population (and the barn cats were healthier than any house cats I've had).
So important to have thoughtful, informed information! Can't thank you enough.
A 2018 outbreak of this strain spread through birthday party (34 infected) and a funeral (10 infected). Seems more contagious than sharing a bed or providing medical care.
Source New England Journal of Med:
https://www.nejm.org/doi/full/10.1056/NEJMoa2009040
Contact tracing did knock down what seemed like a relatively alarming reproduction rate thanks to quick work and a long incubation time (giving time to trace contacts). This article indicated people are likely contagious at symptom onset /febrile phase and not incubation time.
Did you happen to catch the livestream Katelyn and Marissa did earlier this week? They reiterated 2 things that the nejm article you linked also mentions: 1) the concept of a super spreader and 2) the type of close contact that this virus needs to spread.
Even in the article, they explain every close contact that likely led to the spread for that person. The first person who was sick at the birthday party infected the people who sat close to them. They suspect one of those people then infected several others "because of his active social life" , including his wife, before he died a few weeks later. At the funeral, the wife was probably being consoled and hugged by several people, and it mentions 10 of the people that attended were also in close contact with the wife outside of the funeral and got infected. Proximity appears to be a key factor, so that's what we should focus on. If there were more cases of super spreaders seen, that would complicate the situation, sure, but we have to consider all of the data and not just the outliers.
Exceptional review. One has to wonder what would be the situation without WHO overseeing this situation.
Thanks, MPM
Thanks for the continuing clear and thorough coverage, and especially the positive update today. I listened to the more dire news from the podcast yesterday and considered bringing my dinner party to a screaming halt with an apocalyptic update (my take, not yours!). Glad I forebore, and will have better news to share to any anxious friends. For better (and worse), epidemiology is becoming a much more high-profile profession...
Thank you for this piece and for being such an important source of credible information. Those of us in NJ are being told today that two residents in the state were potentially exposed through air travel with someone who had disembarked from the Hondius in late April. So far the two people in NJ are not showing any symptoms. But NJ is the most crowded state in the country, yet the DOH doesn't appear to be quarantining these two people for the duration of the period from their exposure to the outside window for symptoms to appear. Do you think they should be? After we saw many of our neighbors, in states all over the country, refuse to take even the simplest precautions to try to control COVID, it's hard for me to trust that these two residents will necessarily even report symptoms in a timely way if they start happening. Wouldn't quarantining be a much safer way to monitor them?
Thanks for the clear outline of what happened and continues to happen. One thing that I, and others I know, am worried about is this: After the current administration leaves, the government will need to assess what can be done to re-create the level of safety based on science that we enjoyed prior to the DOGE/Trump actions. We know we can't just go back in time and rehire all those who were let go or put the all the same departments into place, it's just too complicated now. I'm hoping that there are some brilliant minds who will figure out the right steps to take to create a safe public health structure such that when the next pandemic happens there will be knowledge and action plans in place.
Thanks for the update and the chart from Dr Rivers
In a couple of weeks, friends are scheduled to board this very ship. Are we certain that it is being spread through human contact and not through any HVAC or otherwise aboard the ship? Would you take that cruise in two weeks?