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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, May 10 The asymptomatic and healthy people among international passengers will now have to undergo institutional quarantine for 14 days, according to the new standard operating procedure (SoP) issued by the Karnataka government for a third time.

The SoP, which has been revised twice, was issued by the Health and Family Welfare Department on Saturday, May 9.

The international passengers will be divided into two categories upon their arrival at the airports. Symptomatic will be directly sent to the covid-19 hospitals. Asymptomatic will not be allowed to go home directly. They will be sent for mandatory quarantine for 14 days in hotels and guest houses. 

Earlier, international passengers had to undergo seven days of institutional and seven days of home quarantine.

Passengers will also be tested only twice — once on arrival and for the second time on the 14th day — instead of the earlier decision to test thrice. They will be discharged from the facility if they test negative.

The first group of 350 people are expected to arrive from London at 3 am on Monday at the Kempegowda International Airport, said Lakshman Reddy, Joint Director, Social Welfare Department. 

Flights are expected from Singapore on May 13, Jeddah on May 14 and San Francisco on May 15. 

Among the stranded include 4,408 tourists and visitors, 3,084 students, 2,784 migrants and 557 ship crew.

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.