There is no treatment for the disease, which has also been detected in a Massachusetts woman who survived the infection, reports the Boston Globe.
In August, after a New Hampshire man fell ill with Powassan, a state health official said the time period between tick bite and infection is unknown but likely to be shorter than the 24-48 hours it takes for a tick to infect a human with Lyme disease.
"Some people who are infected may experience mild illness or no symptoms. Powassan virus can also infect the central nervous system and cause brain inflammation," said New Hampshire Public Health Director José Montero, according to Milford, NH Patch.
Other tick-borne diseases, including anaplasmosis and babesiosis, killed at least 10 people in Massachusetts last year, reports the Cape Cod Times.
Health officials warn residents that ticks are active year-round.
- Severe tick disease investigated in Mass., Maine patients (Boston Globe)
- State: Tick bite can be deadly (Cape Cod Times)
- Hillsborough County Man Tests Positive for Rare Tick, Mosquito-borne Viruses (Milford, NH Patch)