Connect with us


What constitutes the outbreak of COVID-19?



Free Press publishes this story for free, giving everyone access to reliable information about the coronavirus.

Support this work Subscribe today

Specimens to be tested for COVID-19 will be seen at Life Labs on Thursday, March 26, 2020, after being recorded at the time of receipt at the company's lab in Sally, BC.  The weekend after five students in the area have favorably tested.  THE CANADIAN PRESS / Darryl Dyke

Specimens to be tested for COVID-19 will be seen at Life Labs on Thursday, March 26, 2020, after being recorded on receipt at the company’s lab in Sally, BC. The weekend after five students in the area have favorably tested. THE CANADIAN PRESS / Darryl Dyke

Some social media insulted seemingly low numbers when the public health sector in southwestern Ontario declared the outbreak of the COVID-19 community after five students in the area tested positive over the weekend. Did.

Did they wonder if the five cases could really make up an outbreak? If not, how many cases do you need for that classification?

According to infectious disease experts, the classification of outbreaks is unclear, including the one declared by the London Middlesex Health Unit on Sunday after a positive test from a student at Western University.

Also, the magnitude of the outbreak is not always the most important factor in considering whether to call it it.

“(Outbreak) means that there is some uncontrolled, undesired transmission of an infection,” said Dr. Andrew Morris, a professor of medicine at the University of Toronto. “And what we want people to understand is that if they fail to act, whether it’s a community or a concentrated facility like a school or hospital, the consequences are huge. There is a concern about the outbreak because it is possible.

“5 cases can move very quickly to 25 cases, and (of which) 625 cases very quickly.”

Declaring the outbreak, Morris said, indicated that something needed to be done to stop the infection quickly.

Most outbreaks consist of two or more positive cases, but the spread of viruses that already exist in the community affects how cases are classified.

Therefore, even one positive test can be categorized as an outbreak in situations where COVID cases are not expected, such as in a small isolated community.

That’s also why an outbreak occurred following a positive case at a hospital in Langley, British Columbia last month. Morris says it’s actually unexpected for patients to be hospitalized without a COVID and get infected with the virus inside the hospital’s walls because hospitals are strict about infection prevention protocols.

“When public health officials make that call (to classify outbreaks), they see what they are seeing, what they expect to see, and ongoing. See what the potential for exposure is: “So a very small town … it would be very different from Toronto.

“Not every new outbreak in Toronto occurs, but (it) when we find epidemiologically concentrated infections in institutions and communities,” he said.

Dr. Saverio Stranges, an infectious disease expert in Western, agrees that a relatively small number of simultaneous occurrences at a location can be classified as an outbreak as long as those cases are related to each other.

If the infection is likely to come from one source (person or event), it is an outbreak.

“If there is an epidemiologically unrelated case in the (community), we usually define it as an outbreak, not an outbreak,” Stranges said.

Although the terms are sometimes used interchangeably, Morris states that it is important to distinguish between clusters and outbreaks.

But it’s not always easy to tell which is which, he added.

Phylogenetics, which is widely used in New Zealand but rarely used in Canada at present, can help distinguish between viral gene strands by examining clusters of positive tests, he says. ..

Morris explained that similar SARS-CoV-2 strands can be considered to be from the same source. However, if different mutations appear, it probably means that the case is irrelevant.

“If there is a good reason to believe that the case is related and there is potential for growth, it is called an outbreak,” Morris said.

Outbreaks at Western University can be more troublesome than the five cases already reported. The health unit said the currently isolated students live off campus and have never attended classes or events on campus. But they went to restaurants and bars in the heart of downtown London before they got a positive reaction.

Curiously, he said it was difficult to predict how many more cases would occur.

He added that this is where contact tracking becomes increasingly important when testing people who may have been exposed to five positive tests.

“We know that SARS-CoV-2 is highly contagious, but it also depends on the pattern of movement and the type of precautions these students may have taken,” he said. .. “We don’t know the strength of their social interaction. We don’t know if they were masked or if they were at a distance.

“Therefore, it is very difficult to predict how many other people may be infected.”

This report by the Canadian Press was first published on September 15, 2020.


What Are The Main Benefits Of Comparing Car Insurance Quotes Online

LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos

Pictures Credit


to request, modification Contact us at Here or [email protected]

Please disable the ad-blocker on this page to see the content