Kathmandu: Dengue fever continues to be a concern in Nepal, with the current circulating serotype identified as DENV-2, according to a study conducted by the Epidemiology and Infectious Diseases Control Division of the Ministry of Health and Population.

Dr. Gokarna Dahal from the Division reported that 41 percent of the total cases were attributed to DENV-2. The study analyzed 58 samples from the National Public Health Laboratory and BP Koirala Institute of Health Sciences, Dharan.

In the previous year, DENV-1 and DENV-3 were more prevalent in Nepal. It is essential to note that dengue virus (DENV) comprises four serotypes (DENV-1, DENV-2, DENV-3, DENV-4), and individuals can be infected by each of these serotypes. Infection with one serotype provides immunity against the same serotype, but it does not confer protection against the other serotypes. Sequential infections with different serotypes can increase the risk of severe dengue.

Presently, all four serotypes of dengue virus have been detected in Nepal. Since January 2023, a total of 5,688 cases of dengue fever have been reported, with Sunsari district having the highest number of cases at 3,486.

According to the World Health Organization (WHO), there is no specific treatment for dengue. However, early detection of cases, recognizing warning signs of severe dengue infection, and appropriate case management are critical aspects of care to prevent patient fatalities and reduce the severity of the infection.

As dengue remains a public health concern in Nepal, authorities are working to implement strategies for surveillance, timely diagnosis, and effective management to mitigate the impact of the disease and protect the population from its adverse effects.