Langya Virus · What Is It, How Is It Transmitted, and More

Published: Dec 02, 2025

Author: Lily Guo, MD•

Editor: Alyssa Haag, MD•

Editor: Emily Miao, MD, PharmD•

Editor: Kelsey LaFayette, DNP, ARNP, FNP-C

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Copyeditor: David G. Walker

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What is the Langya virus?

Langya virus refers to a newly emerged zoonotic virus (i.e., transmitted from animals to humans) that was first discovered in 2018. Langya virus belongs to the Henipavirus genus, a group of enveloped, single-stranded RNA viruses. The same genus includes Nipah virus and Hendra virus, highly virulent zoonotic pathogens causing severe respiratory and neurological disease in humans.

To date, Langya virus has only infected 35 people in the Shandong and Henan provinces of eastern China; therefore, much about it remains unknown. No fatalities have been reported from the Langya virus thus far, and symptoms are relatively mild.

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How is the Langya virus transmitted?

Langya virus is thought to be transmitted from close contact with animals. Shrews are considered the most likely reservoir host of Langya virus, although it remains unclear whether transmission to humans requires an intermediate host. Seropositivity (i.e., the presence of antibodies) has been detected in goats and dogs, suggesting prior exposure to the virus. Currently, the mode of animal-to-human transmission is unknown and human-to-human transmission cases have not been detected, but the possibility should not be ruled out due to the limited knowledge of the virus. Those who are infected can have an incubation period that lasts as long as 2 months, but most cases range from 5 to 16 days. During this period, infected individuals are asymptomatic but can potentially be contagious. Farmers and manufacturing workers are at the highest risk due to their close proximity to animals. In order to minimize the risk of Langya virus spreading, large-scale studies, including contact tracing, should be performed.

What are the signs and symptoms of Langya virus infection?

The signs and symptoms of Langya virus infection are nonspecific and generally mild in nature. Constitutional symptoms are common, including fever, fatigue, loss of appetite, muscle aches, nausea, and headaches. Some individuals manifest respiratory symptoms, such as cough and severe pneumonia.

The duration of illness and incubation period remains uncertain due to the limited number of affected individuals. Langya virus has been associated with leukopenia (i.e., low white blood cell count), which could result in compromised immunity against other opportunistic infections, and thrombocytopenia (i.e., a decreased number of platelets) was also observed in some cases. Lastly, impaired liver and kidney function have been documented.

How is a Langya virus infection diagnosed?

Langya virus is diagnosed using polymerase chain reaction (PCR) testing of swab samples collected from the throats of infected individuals. Enzyme-linked immunosorbent assay (ELISA) of blood or cerebrospinal fluid, to look for IgM antibodies against the virus, can also aid in the diagnosis. Aside from confirmatory laboratory testing, because of the nonspecific clinical presentation of the virus, no clinical diagnostic criteria have been created. A tracking system to identify and halt the spread of the viral infection has been activated by the Chinese Public Health System, as enhanced monitoring can be important to prevent the spread of Langya virus; moreover, the Taiwan Centers for Disease Control has begun work on genomic sequencing of the Langya virus. Further research including potential severity, modes of transmission, and prevalence is required.

How is a Langya virus infection treated?

Currently, no specific treatments or vaccines have been created to target the novel Langya virus. Similarly to other Henipaviruses, treatment is generally supportive and may include rest, hydration, and medications, such as non-steroidal anti-inflammatories (NSAIDs) (e.g., ibuprofen, aspirin), to reduce symptoms of fever, aches, and pains. Ribavirin, an antiviral drug that is used for Hendra and Nipah viruses may also be employed; however, whether it is successful against Langya virus is still unknown. Preventative measures against zoonotic infections, can include frequent hand washing with soap and water, especially after contact with animals, and avoiding unnecessary contact with wild animals altogether.

What are the most important facts to know about the Langya virus?

Langya virus is a novel virus that was first identified in China in 2018. Only 35 cases were recorded, thus much about the virus remains unknown. Langya virus is likely transmitted from animals to humans, with shrews being the most likely animal reservoir; no person-to-person transmission has been documented. The virus most commonly causes mild fever and flu-like symptoms and no deadly cases have been recorded thus far. Diagnosis for Langya virus infection is based on laboratory testing of throat swabs and blood samples. There are no targeted treatments or vaccines against the virus. Further research on potential severity, modes of transportation, and prevalence is required. Enhanced monitoring through an internationally collaborative effort can be beneficial in preventing the spread of Langya virus.

Key Takeaways

Definition	Langya virus refers to a newly emerged zoonotic virus of the Henipavirus genus, a group of enveloped, single-stranded RNA viruses. To date, it has only infected 35 people in the Shandong and Henan provinces of eastern China.
Transmission	- Most likely reservoir host: shrews - Unknown mode of animal-to-human transmission - No cases of human-to-human transmission detected - Incubation period (potentially contagious) usually 5-16 days, but can be as long as 2 months - Highest risk: farmers, manufacturing workers
Signs and Symptoms	- Non-specific and mild in nature - Constitutional symptoms: fatigue, fever, loss of appetite, muscle aches, nausea, headaches - Respiratory symptoms: cough, severe pneumonia - Leukopenia, thrombocytopenia, and impaired liver and kidney functions were documented in some cases - No fatalities reported so far
Diagnosis	- Polymerase chain reaction (PCR) testing of swabs from throats of infected individuals - Enzyme-linked immunosorbent assay (ELISA) of blood or cerebrospinal fluid, to look for IgM antibodies - Nonspecific clinical presentation →no clinical diagnostic criteria created
Treatment	- No specific treatment or vaccines - Supportive care: rest, hydration, symptoms relief (e.g., NSAIDs) - Unknown success rate of ribavirin (antiviral drug used against Hendra and Nipah virus) - Preventive measures against zoonotic infections: - Frequent hand washing - Avoid unnecessary contact with wild animals

References

Chakraborty S, Chandran D, Mohapatra RK, Islam MA, Alagawany M, Bhattacharya M, Chakraborty C, Dhama K. Langya virus, a newly identified henipavirus in China - Zoonotic pathogen causing febrile illness in humans, and its health concerns: Current knowledge and counteracting strategies - Correspondence. Int J Surg. 2022;105:106882. doi: 10.1016/j.ijsu.2022.106882

Panda S. China Reports Cases of Langya Virus. What Is This New Zoonotic Disease that Has Infected over 30 People? Financial Express Healthcare. Published August 10, 2022. https://www.financialexpress.com/healthcare/news-healthcare/china-reports-cases-of-langya-virus-what-is-this-new-zoonotic-disease-that-has-infected-over-30-people/2624570/

Shanmugaraj B. Langya virus—Recent insights into emerging Henipavirus. Microbes Infect Dis. Published online 2025. doi:10.21608/MID.2024.330159.2299

Uwishema O, Shariff S, Rai A, Arab S, Nicholas A, Uweis L, Abbass M, El Saleh R, Adanur I, Wellington J. Is the New Langya virus in China a threat to global health? A short communication. Ann Med Surg (Lond). 2023;85(4):1348-1351. doi: 10.1097/MS9.0000000000000322

Zhang XA, Li H, Jiang FC, Zhu F, Zhang YF, Chen JJ, Tan CW, Anderson DE, Fan H, Dong LY, Li C, Zhang PH, Li Y, Ding H, Fang LQ, Wang LF, Liu W. A zoonotic Henipavirus in febrile patients in China. N Engl J Med. 2022;387(5):470-472. doi: 10.1056/NEJMc2202705