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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 8: Karnataka recorded 308 new COVID-19 cases in the past 24 hours, with the majority of patients being domestic returnees, raising the state's tally to 5,760 an official said, here on Monday. "Over 308 new cases were reported from Sunday 5 pm to Monday 5 pm," said the health official.

Like everyday Maharashtra returnees accounted for 96 per cent (267 cases) of the 277 new cases. Majority infections in Karnataka nowadays are returnees, mostly from the state's northern neighbour.

A few returnees also came from Tamil Nadu, Telangana and Andhra Pradesh. There was one international returnee, a 23-year-old man from Dakshina Kannada, who came from the UAE. Only 24 new infections were contacts of earlier cases.

On Monday, cases spiked in Kalaburagi, Yadgir, Bidar, Udupi, Bengaluru Urban, Ballari and Gadag.

Among the new cases, Kalaburagi contributed (99), followed by Yadgir (66), Bidar (48), Udupi (45), Bengaluru Urban (18), Ballari (8), Gadag (6), Shivamogga and Dharwad (4 each), Hassan and Dakshina Kannada (3 each), Bagalkote (2) and Koppal and Ramnagar (1 each). Four patients are suffering from Influenza-Like Illness (ILI).

Meanwhile, record 387 patients got discharged in the past 24 hours. On Monday, three persons - A 67-year-old man, a 48-year-old woman and another 65-year-old woman, all from Bengaluru Urban, succumbed to coronavirus.

Of all the cases, 3,175 are active, 2,519 discharged, 64 dead and 14 in the ICU.

In the past 24 hours, Karnataka tested 8,779 people. Of this, 8,231 reports returned negative. A number of tests were lower than other days. In total, 3.93 lac samples have been tested so far, of which 3.8 lac have returned negative.

Currently, Udupi is leading the state's COVID-19 burden with 628 active cases, followed by Kalaburagi (539), Yadgir (488), Raichur (276) and Bengaluru Urban (176) among others.

Bengaluru Urban has accounted for 18 deaths, followed by Kalaburagi (7), Bidar, Vijayapura, Davangere and Dakshina Kannada (6 each) and Chikkaballapur (3 each), among others.

Bengaluru, Jun 24:  Karnataka on Wednesday reported 397 new coronavirus positive cases, taking the total number of positive cases to 10,118.

According to the State Health Department, with 14 more deaths today, the state's toll has reached 164. While, 6,151 people have been discharged so far.

Hundred per cent of Community Health Centres, 50 per cent of Primary Health Centres and Urban Primary Health Centres will be converted as exclusive 'fever clinics' to screen fever cases for influenza-like illness (ILI)/severe acute respiratory infections (SARI), Karnataka Health Department said.