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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.

Bengaluru, Apr 19: With six new cases of COVID-19 in the last 24 hours, Karnataka's total count of coronavirus patients has surged to 390, said the State's Health Department on Sunday.

"Six new cases have been confirmed for COVID-19 in the State from 5 pm yesterday till 5 pm today. Cumulatively, 390 COVID-19 positive cases have been confirmed in the state," said the Health Department in a statement.

The total coronavirus cases in the State include 16 deaths and 111 discharges.

Deputy Chief Minister CN Ashwath Narayan said that "only essential and critical number of" employees of the Information Technology (IT) companies will be allowed to work from offices from April 20 onwards in Bengaluru, while others will have to continue working from home.

According to the latest update by the Ministry of Health and Family Welfare, the total number of positive cases in India has mounted to 16,116 and 519 deaths have been reported till now.

Kasaragod, Apr 1: Kerala Chief Minister Pinarayi Vijayan on Tuesday announced a special action plan for Kasargod district where more people testing positive to the Coronovirous.

"The northern most district of the State has become the hot bed of Coronavirus infection with the maximum number of positive cases confirmed in Kerala," the Chief Minister told a press conference at the Government Secretariat.

“A special action plan will be implemented in Kasargod. Currently, Kasargod district has the maximum number of positive cases and also the highest number of people under hospital observation. Data from the panchayats in the district will be used to test people with symptoms and also to identify people in contact with them," he said.