Three probable cases of rare tick-borne disease ‘rabbit fever’ detected in New York
Three probable cases of a rare tick-borne disease have been detected in New York, including one in a nine-year-old boy.
The infections were recorded on Long Island and diagnosed as tularemia, a rare but serious bacterial infection that can cause severe head and neck pain and, without treatment, kills 10 percent of patients.
It is also known as ‘rabbit fever’ because the disease is often recorded in rabbits, causing them to become very ill and die. Humans are normally infected by tick bites, but can also catch the bacteria by eating infected rabbits.
Health officials in Suffolk County, which covers most of Long Island, recorded the suspected infections, but said it would take weeks to confirm them because of the complex tests needed.
Among the patients was nine-year-old John Detmer, who became infected after he was bitten on his head by a tick in April while he was playing in his yard.
His mother Tracey noticed the tick and quickly removed it, then monitored her son for symptoms.
What followed was a nightmare characterized by severe head and neck pain, a 10-day fever, and sleepless nights filled with tears.
It took multiple doctor visits before an infectious disease specialist finally diagnosed Detmer with tularemia. Three months later, he’s still battling fatigue.
Tick bites are the most common way tularemia spreads. With cases on the rise, experts urge extra caution during peak season
His mother Tracey told ABC7: ‘You feel terrible, you truly do. He would be laying there crying at night and there’s nothing you can do.’
She added: ‘He was sick, he was truly so sick.’
Tularemia is caused by the bacteria Francisella tularensis.
Often, it infects people from tick and deer fly bites. It can also be spread by eating infected rabbits, hares or rodents, handling infected dead animals, drinking contaminated water or breathing in dust laced with the bacteria.
About 200 cases and four deaths from the infection are recorded in the US every year, but these are normally in the South and Midwest.
Tularemia is treated with antibiotics if caught early. However, most people do not realize they have been exposed until symptoms appear.
Cases typically spike from May through September, peaking in June. But there are signs that it is becoming more common.
In 2023, there were 196 reported cases in the US, a 56 percent increase compared to a decade ago.
Nationwide cases have rebounded since the 1990s, with 2023 reporting 196 cases – a 56 percent increase over the previous decade
First-line treatments now include ciprofloxacin, doxycycline, gentamicin and levofloxacin.
However, without treatment, tularemia is fatal in about 10 percent of cases. But with prompt antibiotics, that drops to less than one percent.
Still, recovery can take weeks or even months.
Symptoms usually appear three to five days after exposure and come on suddenly.
They can include high fever, chills, severe headache, muscle aches, joint stiffness and a skin sore or ulcer at the bite site. Swollen lymph nodes are also common.
In more severe cases, the infection can spread to the lungs, causing pneumonia and shortness of breath.
Detmer is still recovering from his infection. No further details were released on the other two patients who were infected.
It was not clear why three cases had surfaced in Suffolk County, but experts are probing two theories.
Cases spike from May through July, with June and July seeing the highest numbers—aligning with peak tick season
This year has been a particularly bad tick season, possibly because heavy winter snow protected tick eggs from freezing.
Some experts wonder if warming temperatures and changing weather patterns are expanding tick habitats and lengthening their active seasons.
Milder winters and earlier springs mean ticks are active longer, giving them more opportunities to spread disease.
Suffolk County reported four cases in 2024, the highest number since before 2014. Whether this year’s three probable cases are part of a trend or simply a cluster remains unknown.
For now, officials are focused on tracking the cases and reminding everyone to stay vigilant outdoors.
Public health officials advise using insect repellent, wearing long sleeves and pants when outdoors, checking for ticks after spending time outside and avoiding handling sick or dead wild animals. If you find a tick, remove it promptly.
People who develop a fever or unusual symptoms after a tick bite or outdoor exposure should see a doctor and mention the possibility of tularemia.
