B. V. Kakkilaya No More

Washington, Jun 30: Researchers in China have discovered a new type of swine flu that is capable of triggering a pandemic, according to a study published Monday in the US science journal PNAS.

Named G4, it is genetically descended from the H1N1 strain that caused a pandemic in 2009.

It possesses "all the essential hallmarks of being highly adapted to infect humans," say the authors, scientists at Chinese universities and China's Center for Disease Control and Prevention.

The researchers then carried out various experiments including on ferrets, which are widely used in flu studies because they experience similar symptoms to humans -- principally fever, coughing and sneezing. 

G4 was observed to be highly infectious, replicating in human cells and causing more serious symptoms in ferrets than other viruses.

Tests also showed that any immunity humans gain from exposure to seasonal flu does not provide protection from G4.

According to blood tests which showed up antibodies created by exposure to the virus, 10.4 percent of swine workers had already been infected.

The tests showed that as many as 4.4 percent of the general population also appeared to have been exposed.

The virus has therefore already passed from animals to humans but there is no evidence yet that it can be passed from human to human -- the scientists' main worry.

"It is of concern that human infection of G4 virus will further human adaptation and increase the risk of a human pandemic," the researchers wrote.

The authors called for urgent measures to monitor people working with pigs.

"The work comes as a salutary reminder that we are constantly at risk of new emergence of zoonotic pathogens and that farmed animals, with which humans have greater contact than with wildlife, may act as the source for important pandemic viruses," said James Wood, head of the department of veterinary medicine at Cambridge University.

A zoonotic infection is caused by a pathogen that has jumped from a non-human animal into a human.

Marriages will have to shed decadence as the state government, in an advisory, has restricted the number of guests to 50 and barred consumption of liquor at such events. 

The advisory was issued in anticipation that the COVID-19 lockdown will be eased in a phased manner. 

The advisory, issued by the Department of Health & Family Welfare, states that events can be held in a “suitable public place with good natural ventilation (no air condition).”

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All guests must have the Arogya Setu app on their phones and the contact details all marriage attendees should be maintained. 

No person from a containment zone will be allowed to attend the event, and persons aged above 65 years, pregnant women and children below 10 years are not permitted. 

Sanitizers are to be provided at the entry and at “appropriate” places. Thermal screening is a must at the entry point of the venue. The scanner should be held 3-15 cm away from a person’s forehead. “Anyone found having a fever (37.5 degree centigrade or 99.5 farenheit), cold, cough, difficulty in breathing shall not be permitted to attend the event and immediately referred to seek medical advice,” the advisory said. 

Besides prohibition on consumption of alcohol, the advisory said paan, gutka and tobacco will not be allowed. 

Face masks are compulsory and all persons should maintain a physical distance of more than one metre. The venue shall be clean and hygienic, with a prohibition on spitting in public places.

A nodal person should be identified to oversee the arrangements, the advisory said.