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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.

A 7-year-old Dalit girl who had gone missing from outside her residence in Tamil Nadu’s Pudukkottai district on June 30 was found dead last evening. 

Police sources said that the body with severe injures was found in a forest area bordering her village. The young girl had been sexually assaulted before the murder, according to police.

Victim’s neighbour, Raja, 25, who belongs to the Pandaram caste, has been arrested in connection with the incident.

While they have included murder charges in the First Information Report (FIR) against him, they are awaiting the post-mortem report to add sections of the Protection of Children against Sexual Offence Act (POCSO act) in the FIR.

"The girl was playing outside her home at 4pm. Her parents then found her missing and her father filed a complaint at the station at around 7pm. Efforts were then underway to find the girl," said an investigating official.

They found the minor's body in the forest area near her village on the evening of July 1. Her clothes were in a state of disarray and her face was severely injured.

"She has been beaten with sticks on the face and injuries are clearly visible. The post-mortem will reveal the actual cause of death," says an official from the district.

Police sources further add that the neighbour had found the minor roaming around the area on Wednesday and allegedly took advantage of the fact that she was alone.

"During inquiry he admitted that he had sexually assaulted and murdered the girl," says a police official from the district. "Further investigation is underway and we will have more clarity once we get the post mortem report," he adds.