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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, Jun 6: Karnataka registered 378 Covid-19 cases in the past 24 hours, breaching the 5,000-mark to settle at 5,213, said an official, here on Saturday. "New cases reported from Friday 5 p.m. to Saturday 6 p.m. is 378," said a health official.

Of the new cases, 333 are local returnees, comprising 88 per cent of the new infections. Returnees from Maharashtra accounted for 99 per cent new cases at 329.

Majority infections in Karnataka nowadays are returnees, mostly from the state''s northern neighbour. Only 27 new infections were contacts of earlier cases.

On Saturday, cases spiked in Udupi, Kalaburagi, Yadgir, Bengaluru Urban, Belagavi, Vijayapura, Davangere and Dakshina Kannada.

Udupi witnessed the highest number of cases (121), followed by Yadgir (103), Kalaburagi (69), Dakshina Kannada (24), Bengaluru Urban (18), Vijayapura and Davangere (6 each), Belagavi (5), Gadag (4), Mandya, Hassan, Dharwad and Haveri (3 each), Raichur, Chikkaballapura and Uttara Kannada (2 each) and Bidar, Tumkur, Kolar and Koppal (1 each).

Among the new cases, three patients from Bengaluru Urban are suffering from Influenza Like Illness (ILI) and another from Severe Acute Respiratory Infection (SARI).

There were seven cases with international travel history to United Arab Emirates (UAE) and one to Turkey.

Meanwhile, 280 people were discharged in the past 24 hours and two persons succumbed to the virus, one from Bidar and another from Vijayapura. Of all the cases, 3,184 are active, 1,968 discharged, 59 dead and 11 in the ICU.

In the past 24 hours, Karnataka tested 11,862 people, of which 11,431 reports returned negative. In total, 3.72 lakh samples have been tested so far, of which 3.61 lakh have returned negative.

Currently, Udupi is leading the state''s Covid-19 burden with 785 active cases, followed by Kalaburagi (448), Yadgir (407), Raichur (320) and Mandya (163) among others.

Bengaluru Urban has accounted for 13 deaths, followed by Kalaburagi (7), Bidar, Vijayapura, Davangere and Dakshina Kannada (6 each) and Chikkaballapura (3 each), among others.

Mysuru, Mar 24:m who returned from foreign travel and flouted home quarantine guidelines has been arrested in Mysuru on Monday. 

The man, who returned from Australia, had a seal on his hand but was roaming around the city. 

According to police, he was supposed to be under home quarantine till April 6. V V Puram Police took him into custody.