Puttur girl Aneesha Nayak wins bronze at international science fair in the US

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 5: Karnataka registered its highest single-day spike of more than 500 new COVID-19 cases, taking the total number of infections in the state to 4,835, the health department said on Friday.

The previous biggest single-day spurt was recorded on June 2 with 388 cases.

Of the 515 fresh cases reported, 482 are returnees from other states, mostly (about 471) from neighboring Maharashtra. Udupi district saw a major spike with over 200 cases today and the total tally of the district breaching seven hundred cases mark, to stand at 768.

As of June 5 evening, cumulatively 4,835 COVID-19 positive cases have been confirmed in the state, which includes 57 deaths and 1,688 discharges, the department said in its bulletin.

It said, out of 3,088 active cases, 3,075 patients are in isolation at designated hospitals and are stable, while 13 are in ICU.

On Friday, 83 patients have been discharged.

According to state COVID-19 war room data, out of the total 4,835 cases, 93 per cent (4,488 cases) are asymptomatic and 7 per cent (347) are symptomatic.

The new cases include 471 from Maharashtra, three from Delhi, two each from Andhra Pradesh, Telangana and Haryana, and one from Tamil Nadu.

While one is with international travel history from Indonesia. Remaining cases include- contacts of patients earlier tested positive, those from containment zones, those who travelled from other districts, and the ones whose contact history is still being traced.

Among the districts where new cases were reported, Udupi accounts for 204 cases, followed by 74 from Yadgir, Vijayapura 53, Kalaburagi 42, Bidar 39, Belagavi 36, Mandya 13, Bengaluru Rural 12, Bengaluru Urban 10, Dakshina Kannada 8, Uttara Kannada 7, three each from Hassan, Dharwad and Chikkaballapura, two each from Ramanagara and Haveri, and one each from Davangere, Bagalkote, Ballari and Kolar.

Udupi district tops the list of positive cases, with a total of 768 infections, followed by Kalaburagi 552 and Bengaluru urban 434.

Among discharges, Bengaluru urban still tops the list with total 271 discharges, followed by Davangere 147 and Mandya 146.

A total of 3,60,720 samples were tested so far, out of which 13,627 were tested on Friday alone.

So far 3,49,951 samples have reported as negative, and out of them 12,797 were reported negative on Friday.