On Valentine's Day, Raja and Rani get married in Bengaluru park

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.

San Diego, Apr 15: Several people lost their sense of smell or taste weeks ago globally and are still waiting for it to come back and now, researchers have identified an association between sensory loss and novel coronavirus 2019 (COVID-19) infection, indicating that loss of smell and taste may be considered as early symptoms of the deadly disease.

Interestingly, the study also found that persons who reported experiencing a sore throat more often tested negative for COVID-19.

The team from University of California-San Diego found high prevalence and unique presentation of certain sensory impairments in patients positive with COVID-19.

Of those who reported a loss of smell and taste, the loss was typically profound, not mild.

"Based on our study, if you have smell and taste loss, you are more than 10 times more likely to have COVID-19 infection than other causes of infection. The most common first sign of a COVID-19 infection remains fever, but fatigue and loss of smell and taste follow as other very common initial symptoms," explained study researcher Carol Yan from UC San Diego.

"We know COVID-19 is an extremely contagious virus. This study supports the need to be aware of smell and taste loss as early signs of COVID-19," Yan added.

For the findings, published in the journal International Forum of Allergy and Rhinology, the research team surveyed 1,480 patients with flu-like symptoms and concerns regarding potential COVID-19 infection who underwent testing at UC San Diego Health from March 3 through March 29, 2020.

Within that total, 102 patients tested positive for the virus and 1,378 tested negatives. The study included responses from 59 COVID-19-positive patients and 203 COVID-19-negative patients.

Encouragingly, the rate of recovery of smell and taste was high and occurred usually within two to four weeks of infection.

"Our study not only showed that the high incidence of smell and taste is specific to COVID-19 infection but we fortunately also found that for the majority of people sensory recovery was generally rapid," said Yan.

"Among the COVID-19 patients with smell loss, more than 70 per cent had reported improvement of smell at the time of the survey and of those who hadn't reported improvement, many had only been diagnosed recently," she added.

Sensory return typically matched the timing of disease recovery.

In an effort to decrease the risk of virus transmission, UC San Diego Health now includes loss of smell and taste as a screening requirement for visitors and staff, as well as a marker for testing patients who may be positive for the virus.

"It is our hope that with these findings other institutions will follow suit and not only list smell and taste loss as a symptom of COVID-19, but use it as a screening measure for the virus across the world," Yan said.

Bengaluru, Jan 29: The high court has granted bail to a 37-year-old Bangladeshi woman from the Christian community on the strength of Citizenship (Amendment) Act 2019.

The court cited Section 2 of the amended Citizenship Act 1955, according to which minorities from Pakistan, Bangladesh and Afghanistan who entered India on or before December 31, 2014 should not be treated as illegal immigrants, while granting her bail.

Allowing the petition filed by Archana Purnima Pramanik, an illegal immigrant from Bangladesh, who claims to be staying in India since 2003, justice John Michael Cunha on Monday directed her to furnish a bail bond for Rs 2 lakh to the satisfaction of the investigating officer and cooperate with the probe.

The judge observed the allegations made against her must be proved in a full-dressed trial. Archana was booked for obtaining documents such as PAN and Aadhaar cards and also fraudulently obtaining an Indian passport on March 28 last year. Based on a complaint filed by the assistant passport officer, Archana was arrested on November 7, 2019 and her bail petition was dismissed by a sessions court on December 4, 2019.

Born on March 23, 1983 at Tanore, Rajshahi district of Bangladesh, Archana came to India in 2003 to pursue a career in nursing. After obtaining a diploma in general nursing and midwifery at Ranchi in 2006, she worked in many reputed hospitals.

In 2010, she got married to Rajashekaran Krishnamurthy and the marriage was registered at Ranchi. After the wedding, she moved to Bengaluru and obtained PAN, Aadhaar and voter ID cards.

On April 1, 2019, Archana applied for a visa to Bangladesh for herself and her son. During her journey on May 20, 2019, they were detained at Kolkata airport and released later. However, the regional passport office issued a notice revoking Archana’s passport and she was arrested by RT Nagar police on November 7, 2019.