Chikungunya Cases Rise in US, Echoing 2004-2005 Epidemic
October 15, 2025 – Health officials are reporting a resurgence of chikungunya virus cases in the United States, mirroring a significant outbreak that occurred between 2004 and 2005. While local mosquito surveillance has not yet detected the virus in local insect populations, cases are emerging across Europe and the US, prompting concern among public health experts.
The virus, spread primarily by Aedes mosquito species, infected nearly half a million people globally during the 2004-2005 epidemic.”we are seeing history repeating itself,” stated Diana Rojas Alvarez,a medical officer at the World Health Institution,regarding the recent increase in cases.
Chikungunya infections are most common in Asia, Africa, and South America.Symptoms include fever,joint pain,and potentially life-threatening complications affecting the heart and brain. The CDC reports that 15 to 35 percent of those infected experience no symptoms. The incubation period typically lasts three to seven days, with a sudden onset of fever exceeding 102 degrees Fahrenheit (39 degrees Celsius) being the most common initial symptom.
Deaths are rare but possible in severe cases. The virus is transmitted exclusively through the bite of an infected mosquito and does not spread via bodily contact or saliva.
Currently, there is no specific medical treatment for chikungunya, though therapies exist to manage symptoms and complications. Experts recommend regular use of insect repellents and wearing long-sleeved clothing to prevent mosquito bites. Two vaccines are available, but are not routinely administered, and are recommended only for individuals traveling to outbreak areas or those at higher risk of infection.
