Equality, cooperation must in India; friction will not work: RSS chief

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.

Udupi, June 2: The number of positive cases may continue to be more in Udupi district since the results of more than 3,000 samples are pending with Labs.

The district total cases to 260. The figure had seemed far-fetched on May 15, when the number of cases stood at just three. The latest spike has been attributed to the return of migrants from other States as well as from abroad. These samples are from people who returned to the district in the last two weeks.

This delay is because the laboratories testing samples from Udupi are burdened with a high case-load after more than 8,500 people returned to the district, particularly from the neighbouring state of Maharashtra.

"Samples have piled up after the influx of people returning from other states and from abroad," says Dr Prashant Bhat, nodal officer for COVID-19 in Udupi. This delay has caused returnees in institutional quarantine to stay on for as long as 18 days.

The designated laboratory for coronavirus testing in Udupi is Wenlock District Hospital in Mangaluru. The district administration also sends samples to laboratories at the Kasturba Hospital in Manipal, Yenepoya Medical College, Mangaluru, KS Hegde Medical Academy, Mangaluru, and Viral Diagnostic Laboratory in Shivamogga. Apart from Udupi, the laboratory in Manipal is also testing samples from Uttara Kannada district. The laboratory in Shivamogga is also testing samples from Shivamogga and Bijapur districts. The laboratories in Mangaluru, similarly, have samples from Dakshina Kannada district.

Dr Avinash Shetty, Medical Superintendent of Kasturba Hospital in Manipal, one of the private laboratories being used by the Udupi district administration, said that they are testing samples in batches. "We received around 600 samples today and we will be testing them now. The backlog of samples should be cleared in the next few days," Dr Avinash said.

All 73 cases reported in Udupi on Monday were patients with travel history of returning from Maharashtra or patients with travel history of returning from abroad.

In cases of some patients who tested coronavirus positive in the past week, people were released from institutional quarantine after a stipulated period only to be tracked down again and admitted in hospitals after their results returned positive.

While two such cases emerged in Belapu and Belman in the district, the administration is now following up with others who were released from institutional quarantine to ensure they remain in home quarantine till their test results are confirmed.

The spike in cases among returning migrants in Udupi also comes at a time the Karnataka government reduced restrictions on interstate travel.

Mangaluru, Jul 2:  A seven-day old baby boy was tested positive for Covid-19, Health Department officials said on Thursday.

The infant is currently undergoing treatment at a designated Covid Hospital here. The baby was born at a private hospital in the city last week. 

According to the officials, it was not known as to how the newborn contracted the infection.