https://www.ctvnews.ca/health/coronavirus/these-7-symptoms-best-predict-a-novel-coronavirus-infection-epidemiologists-say-1.5606289


These 7 symptoms best predict a novel coronavirus infection, epidemiologists say

Brooklyn NeustaeterCTVNews.ca Writer

@bneustaeter ContactPublished Thursday, September 30, 2021 8:53AM EDTLast Updated Thursday, September 30, 2021 10:01PM EDThttps://imasdk.googleapis.com/js/core/bridge3.482.0_en.html#goog_57992435Volume 90% Tam warns Canada facing a grim fall NOW PLAYINGDr. Theresa Tam issued a new warning, saying that the country could face a grim fall if more Canadians don’t get vaccinated.CTV National News: Canada’s worst COVID-19 wave NOW PLAYINGNew COVID-19 modelling shows that without more vaccinations cases could skyrocket this month. CTV’s Creeson Agecoutay explains.Dr. Theresa Tam on urgent need to get vaccinated NOW PLAYINGCanada’s top doctor Theresa Tam says there’s an urgent need for adults 18-39 to be vaccinated to reduce transmission of the delta variant.Tam: daily case counts have increased ‘rapidly’ NOW PLAYINGDr. Theresa Tam says daily counts have rapidly increased, going from 640 cases per day in June to almost 3,500 per day in September.Sept. 3: WATCH PHAC’s full modelling update NOW PLAYINGPHAC released new modelling data, warning caseloads could reach ‘unprecedented highs’ if the surge isn’t stopped now.‘Pandemic of the unvaccinated’ NOW PLAYINGInfectious disease epidemiologist Dr. Zahid Butt says the rising COVID-19 numbers in Ontario show the pandemic is among the unvaccinated.Bogoch: ‘We have to protect health-care system’ NOW PLAYINGInfectious disease expert Dr. Isaac Bogoch breaks down new modelling showing the fourth wave could have a serious impact on Ontario’s ICUs.Delta could cause resurgence in the fall: modelling NOW PLAYINGNew modelling shows that the Delta variant, if vaccinations are low, could cause a resurgence in the virus this fall.Resurgence if contacts increase by 50%: modelling NOW PLAYINGFederal health ministers show new modelling that suggests a resurgence could be possible if reopening increases contacts by 50%.Active cases drop over 90% since peak: modelling NOW PLAYINGDr. Theresa Tam unveils new modelling data which so that average daily cases counts are down more than 90 per cent since the peak of the current wave.Watch the full modelling update from April 23 NOW PLAYINGFederal officials say variants of concern make up more than half of recently reported new COVID-19 infections.April 23 modelling update: Tam on variant cases NOW PLAYINGChief Public Health Officer Dr. Theresa Tam discusses projections related to the spread of variants.How can Canada defend against COVID-19 variants? NOW PLAYINGDr. Peter Juni, Scientific Director of the Ontario COVID-19 Science Advisory Table, reacts to the latest federal COVID-19 modelling.March 26 update: B.1.1.7 variant spreading rapidly NOW PLAYINGDr. Theresa Tam says provinces west of Atlantic Canada is seeing a rapid surge of the B.1.1.7 variant in particular.April 16 modelling update: Grim numbers in Ont. NOW PLAYINGDr. Adalsteinn Brown gave an update on the provincial modelling, showing dire numbers and ICUs at capacity.CTV National News: Disaster scenario in Ontario NOW PLAYINGAccording to new modelling data, COVID-19 cases in Ont. could reach record heights. CTV’s Merella Fernandez has the details.Tam on easing restrictions with one shot NOW PLAYINGDr. Theresa Tam on if vaccinating the majority of Canadians with one shot of the COVID-19 vaccine is enough to ease restrictions.Watch full update of Nov. 20 COVID-19 modelling NOW PLAYINGNov. 20: Canada releases its latest national COVID-19 modelling as cases continue to increase.Feds forecast exponential spike for Alberta NOW PLAYINGWithout immediate action, the federal government says Alberta headed for spike in COVID-19 cases. Kathy Le reports.Tam: Canada may hit up to 12,120 deaths by Nov. 30 NOW PLAYINGCanada is projected to hit between 366,500 to 378,600 total COVID-19 cases, and between 11,870 to 12,120 deaths by Nov. 30.60,000 cases per day possible in December NOW PLAYINGJustin Trudeau urging people to stay home but won’t implement a nation-wide lockdown. CTV’s Michel Boyer reports.We’re now going to have to tighten up: PM Trudeau NOW PLAYINGPrime Minister Justin Trudeau says we need to do everything we can right now to slow down the spread of the virus.‘All orders of gov’t must come together’: Trudeau NOW PLAYINGTrudeau urges all orders of government to come together and says ‘the best way to protect the economy is to get the virus under control.’‘They have been heroes’: PM on frontline workers NOW PLAYINGPM Trudeau urges Canadians to do their part to stop the spike in cases to give those on the frontlines a break.‘Clear sign’ in increase of COVID-19 transmission NOW PLAYINGDr. Tam explains the ‘clear signs’ that transmission of COVID-19 has increased in the country.Watch: PM Trudeau’s full update on COVID-19 NOW PLAYINGNov. 20: Prime Minister Justin Trudeau addresses Canadians following the release of the latest national COVID-19 modelling data, urging Canadians to reduce contacts.Dr. Tam’s message to Canadians, local officials NOW PLAYINGDr. Tam says the ‘time is now’ to limit contact with people and shares a message for regions that haven’t seen an increase in cases yet.What examples Canada should be following when considering new restrictions NOW PLAYINGAre there countries that have handled lockdowns better? And if so, what can we learn from them?

Next

SHARE:

Share17https://platform.twitter.com/widgets/tweet_button.58065ae230495f5d9e4b6a916472b2c1.en.html#dnt=false&id=twitter-widget-0&lang=en&original_referer=https%3A%2F%2Fwww.ctvnews.ca%2Fhealth%2Fcoronavirus%2Fthese-7-symptoms-best-predict-a-novel-coronavirus-infection-epidemiologists-say-1.5606289&size=m&text=These%207%20symptoms%20best%20predict%20a%20novel%20coronavirus%20infection%2C%20epidemiologists%20say%20&time=1633119353773&type=share&url=https%3A%2F%2Fwww.ctvnews.ca%2Fhealth%2Fcoronavirus%2Fthese-7-symptoms-best-predict-a-novel-coronavirus-infection-epidemiologists-say-1.5606289&via=CTVNewsReddithttps://www.facebook.com/plugins/share_button.php?app_id=404047912964744&channel=https%3A%2F%2Fstaticxx.facebook.com%2Fx%2Fconnect%2Fxd_arbiter%2F%3Fversion%3D46%23cb%3Df1d4c9b5b3d24d4%26domain%3Dwww.ctvnews.ca%26is_canvas%3Dfalse%26origin%3Dhttps%253A%252F%252Fwww.ctvnews.ca%252Ff311a4d3845b23%26relation%3Dparent.parent&container_width=64&href=https%3A%2F%2Fwww.ctvnews.ca%2Fhealth%2Fcoronavirus%2Fthese-7-symptoms-best-predict-a-novel-coronavirus-infection-epidemiologists-say-1.5606289&layout=button_count&locale=en_US&sdk=joey&size=small

TORONTO — A team of epidemiologists in the U.K. has determined that a set of seven symptoms, when expressed together, best predict SARS-CoV-2, the virus that causes COVID-19, in the community.

The study, published Tuesday in peer-reviewed journal PLOS Medicine, reports that the symptoms of loss or change of smell, loss or change of taste, fever, new persistent cough, chills, appetite loss, and muscle aches can be used to maximize the detection of COVID-19.

However, the study notes that not all of these symptoms are used in the U.K. to determine eligibility for PCR testing.

Coronavirus Coverage

Tracking every case of COVID-19 in Canada

Coronavirus vaccination tracker: How many people in Canada have received shots?

Sask. reports more than 600 new COVID-19 cases for the first time

These 7 symptoms best predict a novel coronavirus infection, epidemiologists say

For the first time since June, the number of projected COVID-19 deaths in the U.S. is decreasing

Ontario recommends people aged 18 to 24 take Pfizer over Moderna

At least one long-term symptom seen in 37 per cent of COVID-19 patients, study finds

‘It’s a problem’: As society reopens, many still suffering from pandemic anxiety

YouTube announces it is blocking all anti-vaccine content

‘Convenience comes at a price’: Experts urge caution on QR codes

Full coverage at CTVNews.ca/Coronavirus

Related Links

To decide who should be tested in Canada, health care professionals assess people based on their symptoms (mild or severe), underlying medical condition or risk of exposure to the virus.

“In order to improve PCR positivity detection rates and consequently improve control of viral transmission via isolation measures, we would propose to extend the list of symptoms used for triage to all seven symptoms we identified,” the authors wrote.

The authors noted that “rapid detection” of coronavirus infection in the community is key to controlling transmission.

When testing capacity is limited, the study says that tests should be used in the “most efficient way possible,” including using the “most informative” symptoms for determining who to test.

The study, conducted by researchers from Imperial College London, looked at positive throat and nose swab tests from 1,147,345 volunteers in England aged five and older.

According to the study, the data was collected over eight testing rounds conducted between June 2020 and January 2021 as part of REal-time Assessment of Community Transmission, a series of studies using home testing to improve understanding of how COVID-19 is progressing across England.

The participants were asked about their symptoms in the week prior to testing. From this, the researchers determined the seven symptoms that can jointly predict COVID-19 positivity.

The study found that testing people in the community with at least one of the seven symptoms gave sensitivity, specificity, and positive predictive values of 74 per cent, 64 per cent, and 9.7 per cent, respectively.

Modelling conducted by the researchers suggests that using all seven symptoms to determine PCR test allocation would result in 30 to 40 per cent of symptomatic individuals in England being eligible for a test, compaired to 10 per cent currently.

In addition, the study reported that if all those deemed eligible were tested, this would result in the detection of 70 to 75 per cent of positive cases.

Study author and University College London professor Paul Elliot said there is a need for “clear testing criteria” given that signs of COVID-19 infection include symptoms that are commonly found in other illnesses, such as influenza.

“These findings suggest many people with COVID-19 won’t be getting tested — and therefore won’t be self-isolating — because their symptoms don’t match those used in current public health guidance to help identify infected people,” Elliot said in a press release.

“I hope that our findings on the most informative symptoms mean that the testing program can take advantage of the available evidence, helping to optimise the detection of infected people,” he added.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s