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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, Mar 28: Karnataka has reported 10 new positive cases of COVID-19 between 5 pm yesterday and 8 am today, taking the tally to 74 in the state.

"Ten new COVID-19 cases have been reported between 5 pm yesterday and 8 am today, taking the total number to 74 in Karnataka, which includes three deaths and five cured/discharged persons," said the State Health Department on Saturday.

The total number of active COVID-19 cases in the country has climbed to 873, including 78 cured, discharged and migrated cases and 19 deaths, Ministry of Health and Family Welfare said on Saturday.

Bengaluru, May 27: Amid uncertainty caused by the Covid-19 pandemic, which has disrupted school education in Karnataka, the state government is seeking the help of the Union Ministry of Information and Broadcasting to televise classes, a state minister said on Tuesday.

"We request you to provide minimum three channels on the Doordarshan network exclusively for the Department of Public Instruction, Government of Karnataka," Primary and Secondary Education Minister Suresh Kumar said in a letter to Union I&B Minister Prakash Javadekar.

Suggesting co-branding the channels under DD and the state education department, he asked for the channels to be mandatorily transmitted by the cable and DTH operators under the Cable Act.

The state education department has already discussed with Prasar Bharti officials, who, according Kumar, have assured 3+3 hours of timeslots on the education channel Chandana on cost basis.

"We have also made all the necessary arrangements for content creation by the teachers," he said.

Meanwhile, the minister has revealed that television is the best medium for the students as a home learning mode in these challenging times.

"The department of public instruction reviewed various technological options and considered TV as one of the best means for home learning," Kumar said.

In a survey conducted by the education department, it was found out that 95 per cent households had television sets.

Kumar said the state operates government schools in nine languages, including Kannada, English and Urdu.

"To cater to all the students, and considering a long-term strategy to run schools by maintaining social distancing, we are in immediate need of minimum three exclusive channels to teach through TV," he said.

According to Kumar, the Karnataka government is facing hardships to meet the capital expenditure requirements, hence, it is seeking help from the I&B Ministry.