Malaria does exist in the southern belt of Nepal (the Terai) and risk is highest in the months of June, July and August. Most malaria in Nepal is Vivax (75%) and falciparum is around 25%. There have been 12 priority districts for malaria with the recent addition of Banke. These higher risk districts are Dandeldhura, Kanchanpur, Kailali,shareit for windows 10 Bardia in the far west; Nawalparasi in central terai; Sindhuli, Mahottari, Dhanusha in east central; Morang, Jhapa and Ilam in far east; and Kavre immediately east of Kathmandu valley. These are called priority districts because they have had higher rates of falciparum malaria. Malaria preventative medication is recommended for trip/residence in the Terai particularly in one of the priority districts in the hot months from April to October.
Chitwan, although it lies in the Terai, has a very low malaria risk. In the past 20 years, we have not come across any malaria cases that originated in Chitwan. We believe that risk must be very low in Chitwan for the average traveler. We recommend mosquito bite precautions and no malaria prophylactic medication for short visits to Chitwan national park even in the monsoon season.