Top medical experts have given their assessment of the Nipah virus as two nations have commenced screening passengers at airports for this lethal disease. Thailand and Nepal have implemented stringent health checks for travelers arriving from West Bengal in India following the confirmation of two cases of the virus in the area. Nipah, known for causing brain swelling, can spread from animals to humans, contaminated food, or direct human contact, with a high fatality rate ranging from 40% to 75%.
There have been no reported cases of the Nipah virus in the United Kingdom. The travel chief of the UK Health Security Agency reassured that the government is closely monitoring the situation and considers the risk of an imported case into the UK to be very low.
Dr. Meera Chand, Deputy Director of travel health at UKHSA, emphasized the agency’s ongoing vigilance and collaboration with global partners to stay updated on the outbreak. Dr. Kaja Abbas, an expert in Infectious Disease Epidemiology, highlighted the low probability of widespread pandemic spread similar to Covid-19 due to the virus’s structure.
Notably, Nipah virus, a zoonotic RNA virus identified in 1999, can lead to severe respiratory and neurological diseases in humans, progressing from fever and headache to acute encephalitis. While sporadic outbreaks have occurred since 2001, particularly in Bangladesh and India, various transmission routes exist, including from fruit bats to humans and through contaminated fruit products.
Authorities in countries like Thailand and Nepal have initiated passenger screenings from India to prevent international spread, with guidelines for medical observation upon entry. The emphasis is on hygiene, ventilation, avoiding crowds, seeking medical advice promptly, and maintaining overall health to bolster immunity.
The basic reproduction number of the Nipah virus typically indicates limited human-to-human transmission, reducing the likelihood of widespread pandemic spread. Symptoms usually start with flu-like illness, progressing to pneumonia, and the real danger lies in encephalitis or meningitis, resulting in a high mortality rate.
Between 40% and 75% of Nipah virus-infected individuals succumb to the disease, while survivors may face lasting neurological complications. The virus can also reoccur months or years after the initial infection, underscoring its long-term risks.