Nikhil Prasad Fact checked by:Thailand Medical News Team Sep 15, 2025 2 hours, 5 minutes ago
Medical News: Wastewater Signals Point to New Rise
Across several provinces in Canada, doctors are starting to see clear signs that COVID-19 cases are climbing once again. One of the main tools used to track the virus is wastewater testing, which detects how much viral material is present in sewage systems. Right now, national levels are at what health officials call “moderate.” But in key cities like Vancouver, Calgary, Edmonton, Winnipeg, and Montreal South, along with Prince Edward Island, levels are already considered high. According to this
Medical News report, this is a repeat of a pattern seen in previous years where late summer brings a steady increase before autumn and winter create even more favorable conditions for the virus to spread indoors.
COVID-19 Rising Again in Canada as End of Summer Brings Risks
Doctors Urge Canadians to Take Precautions
Medical experts explain that the percentage of COVID-positive tests among people visiting emergency rooms has also increased, now standing at around 8.5 percent. While that is still far from the nearly 17 percent peak reported at the end of August 2024, it shows a noticeable upward shift. The consistent advice remains the same: stay home if you are sick, maintain hand hygiene, and strongly consider vaccination, especially before the colder months when infections usually spread more rapidly.
The Role of Variants and Waning Protection
Another factor fueling the rise is the evolution of new variants. The latest strain, known as XFG, is a direct descendant of Omicron, which has been circulating since late 2021. Experts say it tends to cause mild to moderate illness but can still be dangerous for vulnerable people. Researchers also warn that natural immunity from past infection or old vaccinations fades over time.
Who Is Most at Risk?
Infectious disease specialists stress that while Canada is not expected to face the overwhelming surges of the early pandemic, COVID remains a serious health threat for certain groups. These include older adults, especially those over 65, people with chronic medical conditions, and those living in long-term care homes. Doctors emphasize that antiviral treatments remain an option for high-risk patients to avoid hospitalization if they contract the virus.
Lessons Learned from The Pandemic Years
As fall approaches, experts urge Canadians to remember the hard-learned lessons of the last few years. Crowded indoor settings and drier air make transmission easier, meaning small precautions can make a big difference. Doctors recommend that people take the opportunity now to plan ahead and speak with healthcare providers if they have questions about protection or treatment. While the virus is unlikely to bring back lockdown-level disruptions, its ability to harm vulnerable populations is still very real. Staying alert and cautious can help prevent another difficult winter season.
References:
da.ca/respiratory-virus-surveillance/">https://health-infobase.canada.ca/respiratory-virus-surveillance/
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Medical News.
Read Also:
https://www.thailandmedical.news/news/covid-19-hospital-admissions-across-the-united-kingdom-climb-to-highest-in-10-months
https://www.thailandmedical.news/news/poland-sees-surge-in-covid-19-cases-as-new-variants-spread
https://www.thailandmedical.news/news/bulgaria-sees-sharp-rise-in-covid-19-cases-as-new-wave-emerges
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