Study Blames Birds for the Pesky Common Cold

A virus, which causes cold-like symptoms in humans, started out in birds, according to an article published in the December issue of the Journal of General Virology.

The bug crossed over to humans about 200 years ago, the study reported.

Common Cold
Encyclopedia section of medindia gives general information about Common Cold

Scientists hope their findings will help people understand how potentially deadly viruses emerge in humans.

"Human metapneumovirus may be the second most common cause of lower respiratory infection in young children. Studies have shown that by the age of five, virtually all children have been exposed to the virus and re-infections appear to be common," said Professor Dr Fouchier.

"We have identified sites on some virus proteins that we can monitor to help identify future dominant strains of the virus," the expert added.

Respiratory Diseases - Influenza
Encyclopedia section of medindia gives general info about Influenza

Human metapneumovirus is related to the respiratory syncytial virus, measles, mumps and parainfluenza viruses. It infects people of all ages but is most common in children under five.

Symptoms include runny nose, cough, sore throat and fever. Infection can also lead to more severe illnesses such as bronchitis and pneumonia, which can result in hospitalisation, especially in infants and immunocompromised patients.

Mumps - Causes - Symptoms - Diagnosis And Treatment - FAQs
Mumps is a contagious viral infection that typically causes a painful swelling of one or more of the salivary gland. Mumps most commonly occurs in children aged 2-12 years who have not been vaccinated against the disease. However, it can occur at any age. It was a common childhood disease before the development of the mumps vaccine (MMR vaccine).

HMPV infection is most common during the winter and it is believed to cause up to 10 percent of respiratory illnesses in children.

"HMPV was first discovered in 2001, but studies have shown that the virus has been circulating in humans for at least 50 years," said Professor Dr Ron Fouchier from ErasmusMC in Rotterdam, The Netherlands.

Measles | Rubeola - Causes, Symptoms, Complications, Diagnosis, Treatment, Prevention
Measles is a viral infection with symptoms of fever,and rashes. Measles is prevented by vaccination and staying away from the infected individuals.

"HMPV is closely related to Avian metapneumovirus C (AMPV-C), which infects birds. Because of the similarity, scientists have suggested that HMPV emerged from a bird virus that crossed the species barrier to infect humans," the expert added.

Metapneumoviruses have high evolutionary rates, similar to those of other RNA viruses such as influenza, hepatitis C and SARS. By understanding the evolution and emergence of these viruses the scientists hope to develop ways of monitoring and predicting the emergence of new pathogenic viruses.

Source-ANI
SRM