New Bird Flu in India: H9N2 avian flu outbreak reported

Bird Flu Outbreak in India: India has recently reported the second human case of avian influenza A(H9N2). The first case of H9N2 was reported in India in 2019. According to the World Health Organization (WHO), the case of human infection with avian influenza A(H9N2) virus was detected in a child of West Bengal.

The child has now recovered and was discharged from hospital. According to the IHR (2005), a human infection caused by a novel influenza A virus subtype is an event that has the potential for high public health impact and must be notified to the WHO.

The global health agency maintains that most human cases of infection with avian influenza A(H9N2) viruses are exposed to the virus through contact with infected poultry or contaminated environments.

The 4-year-old patient previously diagnosed with hyperreactive airway disease, initially presented to the paediatrician with fever and abdominal pain on 26 January 2024.

ALSO READ: Regular use of Listerine mouthwash may increase risk of bacteria linked to cancer, study claims

“On 29 January, the patient developed seizures and was brought to the same paediatrician. On 1 February, the patient was admitted to the pediatric intensive care unit (ICU) of a local hospital due to the persistence of severe respiratory distress, recurrent high-grade fever and abdominal cramps. The patient was diagnosed with post-infectious bronchiolitis caused by viral pneumonia. On 2 February, the patient tested positive for influenza B and adenovirus at the Virus Research and Diagnostic Laboratory at the local government hospital. The patient was discharged from the hospital on 28 February 2024,” the WHO said in a statement.

On 3 March, with a recurrence of severe respiratory distress, he was referred to another government hospital and was admitted to the pediatric ICU and intubated.

On 5 March, a nasopharyngeal swab was sent to the Kolkata Virus Research and Diagnostic Laboratory and tested positive for influenza A (not sub-typed) and rhinovirus.

“The same sample was sent to the National Influenza Centre at the National Institute of Virology in Pune for subtyping. On 26 April, the sample was sub-typed as influenza A(H9N2) through a real-time polymerase chain reaction. On 1 May, the patient was discharged from the hospital with oxygen support,” it stated.

According to WHO, The patient had exposure to poultry at home and in the surroundings. Meanwhile, there were no known persons reporting symptoms of respiratory illness in the family, the neighbourhood, or among healthcare workers at health facilities attended by the case at the time of reporting.

The global health agency also cautioned that further sporadic human cases could occur as this virus is one of the most prevalent avian influenza viruses circulating in poultry in different regions.

Bird Flu in India: What are the symptoms?

Infections in humans have primarily been acquired through direct contact with infected animals or through indirect contact with contaminated environments. On the basis of the original host, influenza A viruses can be classified as avian influenza, swine influenza, or other types of animal influenza viruses.

Avian influenza virus infections in humans may cause diseases ranging from mild upper respiratory tract infection to more severe diseases and can be fatal. Conjunctivitis, gastrointestinal symptoms, encephalitis and encephalopathy have also been reported, WHO stated.

ALSO READ: Women’s Health: Important Tips For Transition From Perimenopause To Menopause For Healthy Ageing

Bird Flu in India: How to protect yourself?

According to WHO, following steps should be taken to protect yourself:

• The public should strictly avoid contact with sick or dead animals, including wild birds, and should report dead animals or request their removal by contacting local wildlife or veterinary authorities.
• Everyone should perform hand hygiene, preferably washing their hands either with soap and running water (especially if there is visible soiling of hands) or using alcohol hand rubs.
• Everyone should practice good food safety habits: separating raw meat from cooked or ready-to-eat foods, keeping clean and washing hands, cooking food thoroughly, and handling and storing meat properly.
• Do not touch or consume raw milk or raw milk products, especially from animals with confirmed or suspected avian influenza A virus infection.
• Avoid going to areas with suspected/confirmed cases of bird flu.