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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.

Thrissur, Feb 11: The latest test result of the woman medical student, who arrived here from China's Wuhan region and was the first positive case from India for the novel Coronavirus (nCoV), has come out negative, health officials said on Monday.

Her condition was "stable", they said.

According to the state health department as of now, 31 people are in isolation wards across various hospitals in the state.

"The blood test result of the first patient from Thrissur, from the National Institute of Virology (NIV) testing centre at Alappuzha, shows a negative result.

But we need confirmation from the NIV at Pune," a senior medical officer told news agency.

After the first positive case was reported from Thrissur, two other Keralite students from Wuhan, the epicentre of the virus, had tested positive in Alappuzha and Kasaragod districts.

The health department had earlier said those in isolation wards of various hospitals in the state have come down to 34.

"A total of 3,367 are under observation across the state, of which 3,336 are under home quarantine," a release issued by the health department said.

The department has already sent at least 364 samples for testing at the NIV at Pune and so far 337 results have returned negative.

The ''state calamity'' alert, which was declared on February 3, was withdrawn on Friday after no new positive cases of infection were detected.

Newsroom, Jan 29: Karnataka’s capital has earned the unwelcome distinction of global capital of traffic congestion. According to a report by TomTom, the Netherlands-based global provider of navigation, traffic and map products, Bengaluru beat 415 other cities across 57 countries to earn the title of world's most traffic congested city in 2019.

“Bengaluru takes the top spot this year with drivers in the southern Indian city expecting to spend an average of 71% extra travel time stuck in traffic," TomTom said in the ninth edition of its annual Traffic Index.

Three other Indian cities, namely, Mumbai, Pune and New Delhi are also ranked in the 2019 edition of TomTom’s Traffic Index of the world’s most traffic-congested cities. 

The report released on Tuesday ranks cities by the average time added to a trip. TomTom index also includes details on when congestion is heaviest and lightest, how highways compare with surface streets, and how much time drivers wasted waiting for other drivers to get out of their way.

Following closely on the heels of Bengaluru is Manila, Philippines, with the similar 71% traffic congestion. Among the top five worst traffic affected cities are Mumbai and Pune from India at the fourth and fifth place respectively, while Bogota, Colombia is on third spot.

Delhi, the national capital of India is on the 8th spot, while Moscow (Russia), Lima (Peru), Istanbul (Turkey) and Jakarta (Indonesia) are on 6th, 7th, 9th and 10th spot respectively.

Mumbai recorded a 65% traffic congestion with 9th September, 2019 being the worst day. On an average, a Mumbaikar lost 209 hours in traffic congestion. Pune has 59% traffic congestion with 2nd August, 2019 being the worst day. 193 hours are lost due to congestion. Delhi, on the other hand, has 56% traffic congestion. 23rd October, 2019 was the worst day, while 190 hours are lost in traffic congestion.

Interestingly, among all the four Indian cities, Delhi has the most number of cars. Previous studies have concluded that Delhi has the best road conditions among the Metro cities of India.

If you are wondering what exactly the percentages mean, a 53% congestion level in Bangkok, for example, means that a trip will take 53% more time than it would during Bangkok’s baseline uncongested conditions.

TomTom calculates the baseline per city by analyzing free-flow travel times of all vehicles on the entire road network – recorded 24/7, 365 days a year. The report by Dutch navigation and mapping company ranks cities by the average time added to a trip. It also includes details on when congestion is heaviest and lightest, and how much time drivers wasted waiting for other drivers to get out of their way.