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Bengaluru, Jun 12: The Central government has identified Karnataka's Udupi and Yadgir among the "emerging districts of concern" for COVID-19 in the country. Confirming the development, a top official of the state health department said, "they (centre) had reviewed these two districts a few days back...there was a sudden spurt of cases due to Maharashtra returnees turning positive." Sources said union cabinet secretary Rajiv Gauba, during a recent video conference with state chief secretaries and health secretaries, had shared his thoughts on the issue.

According to the information shared, districts with more than 400 cases, half of which was reported post-May 18 lockdown relaxation, have been identified as "emerging districts of concern." They are concentrated in the seven states/union territories of Maharashtra, Rajasthan, Tamil Nadu, West Bengal, Karnataka, Jammu and Kashmir and Haryana. "Udupi and Yadgir from Karnataka, along with Gurugram in Haryana and Kolhapur in Maharashtra have 90 per cent of the cases recorded after May 18," they said.

As on June 11 evening, Udupi had a total of 969 positive cases, out of which 619 are active, while 735 positive cases have been reported in Yadgir, out of which 626 are active. The two districts had reported a total of only 11 cases each as on May 18. While Udupi till last evening had seen 349 discharges, it was 108 in Yadgir.

Both districts have reported one COVID related fatality so far. As of June 11 evening, cumulatively 6,245 COVID-19 positive cases were confirmed in the state, which included 72 deaths and 2,976 discharges.

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.