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COVID or stomach flu? Why it's hard to know right now – CBC News

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If you’ve felt green around the gills recently, or heard more tales than usual about stomach upsets, you might have wondered if Omicron or its subvariant, BA.2, are causing an increase in gastrointestinal issues.

Some clinicians have also reported seeing more COVID-19 patients suffering from GI symptoms in recent weeks. 

But medical experts say there are a few possible explanations — and it’s not necessarily due to the COVID-19 strains currently circulating in Canada. Diarrhea, vomiting and abdominal pain have been recognized as common symptoms of COVID-19 since early in the pandemic, while nausea, reflux, heartburn, loss of appetite and weight loss are also recognized as potential symptoms.

Dr. Sumon Chakrabarti, an infectious diseases specialist in Mississauga, Ont., said he’s recently seen a higher proportion of COVID-19 patients whose primary symptoms are gastrointestinal. 

“I’ve seen people that just present with vomiting,” he said. 

But, he adds, it’s not that Omicron is necessarily causing more GI issues, but rather, that it’s now easier to detect COVID-19 in those patients than it was earlier in the pandemic.

“We’re testing people that are coming in sick enough to be admitted, and also, people are doing rapid tests at home with any kind of symptom, so it also could be a possibility that we’re just picking these up because we’re looking for them.”

Chakrabarti’s hypothesis is backed up by data from the U.K.-based ZOE COVID Symptom Study App, through which millions of people have reported their symptoms during the pandemic. 

Some people with COVID experience gastrointestinal symptoms, such as diarrhea and vomiting. However, norovirus and other gastro-related illnesses are also circulating. In this photo, a shopper in Burbank, Calif., buys toilet paper amid a shortage fuelled by the pandemic, on Nov. 19, 2020. (Robyn Beck/AFP/Getty Images)

Based on those user reports, there’s no evidence of Omicron causing an upsurge in gastrointestinal symptoms, said lead researcher Tim Spector, a professor of genetic epidemiology at King’s College London.

“It seems to be fairly stable. We’re not seeing major shifts in the symptoms. It’s still very much an upper respiratory infection,” he told CBC News.

Pediatricians seeing concerning symptoms in kids

However, some pediatricians say they have seen a definite uptick in COVID-19 patients with gastrointestinal symptoms during the Omicron wave — and some of those symptoms are especially concerning.

Dr. Ana Sant’Anna, a pediatric gastroenterologist at the Montreal Children’s Hospital, said she has recently seen young patients with blood in their stool or vomit, and some had suffered tears in their gastrointestinal tract as a result of their vomiting.

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“We didn’t see these [symptoms] before,” Sant’Anna said, adding that none of those patients with serious GI symptoms had any respiratory symptoms during their time in hospital.

Despite the severity of their symptoms, nearly all the young COVID patients bounced back quickly after treatment, she said.

“They resolve in a few days, maybe a couple weeks, and they go [out] as good as new.”

Other gastro infections on the rise

Aside from COVID-19, there’s another reason why more Canadians might be experiencing some unpleasant intestinal symptoms right now.

Stomach bugs, like norovirus, are increasingly circulating as life returns to normal, Chakrabarti said, with children often becoming infected with gastro-type illnesses at school, then infecting their families.

Several parts of Canada are seeing a rise in norovirus cases. One major risk factor is children getting infected at school, then infecting their families. In this image, children leave school in Toronto on April 6, 2021, after schools were ordered closed due to COVID-19. (Evan Mitsui/CBC)

Norovirus symptoms can include diarrhea, vomiting, nausea and stomach cramps.

Recent clusters of that illness in New Brunswick affected schools, child-care centres, and long-term care homes, while hundreds of people in B.C., Alberta, Saskatchewan and Ontario fell ill after eating raw oysters.

Children are especially at risk of dehydration from diarrhea and vomiting, whether from COVID-19 or another gastro illness, and should be monitored closely for signs such as less urination, Sant’Anna said.

It’s important to keep them hydrated, and over-the-counter medications may help control vomiting. However, if children cannot keep liquids down due to continued vomiting, they may need hospital treatment with intravenous fluids, she said.

And — as is well known at this stage of the pandemic — hand-washing is an important precaution for preventing the spread of illness.

Can COVID-19 cause long-term gut damage?

There is limited but growing evidence of people experiencing lasting gastrointestinal issues, months after a COVID-19 infection, including indigestion and post-infectious irritable bowel syndrome (IBS).

A recent pre-print study by American researchers, which has not yet been peer-reviewed, hypothesized that the virus might disrupt gut bacteria, and potentially contribute to long COVID.

Other infections, including viruses, bacteria and parasites, can disrupt gut motility — the contractions of muscles to push food through the digestive tract — which can lead to IBS and other conditions. 

Dr. Gil Kaplan, a gastroenterologist and epidemiologist at the University of Calgary, said it’s also possible some people may have had existing, but undiagnosed, GI issues, which were exacerbated by COVID-19. 

Doctors say hand-washing is an important habit to maintain to prevent the spread of illnesses. In this photo, people line up to use portable washrooms in Montreal on May 5, 2021. (Jean-Claude Taliana/CBC/Radio-Canada)

He is part of a team researching the impact of COVID-19 on people living with Crohn’s disease and ulcerative colitis, collectively known as inflammatory bowel diseases.

“It’s not surprising to me that we’re starting to see things like irritable bowel and other types of conditions linked to COVID, that have probably been linked to other infections in the past, but we just haven’t studied [those infections] as extensively as we have with COVID,” Kaplan said.

It’s important that people experiencing ongoing gastro symptoms speak to a doctor for diagnosis and treatment, he said.

For now, kids don’t appear to be suffering longer-term GI issues as a result of their COVID-19 infections, Sant’Anna said — although that could change in future.

“It could be that we will see this a little bit later than the adults, because in terms of the timing, the kids are just now having this, so we [haven’t had] time to have the post-IBS symptoms.”

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Health Canada approves updated Moderna COVID-19 vaccine

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TORONTO – Health Canada has authorized Moderna’s updated COVID-19 vaccine that protects against currently circulating variants of the virus.

The mRNA vaccine, called Spikevax, has been reformulated to target the KP.2 subvariant of Omicron.

It will replace the previous version of the vaccine that was released a year ago, which targeted the XBB.1.5 subvariant of Omicron.

Health Canada recently asked provinces and territories to get rid of their older COVID-19 vaccines to ensure the most current vaccine will be used during this fall’s respiratory virus season.

Health Canada is also reviewing two other updated COVID-19 vaccines but has not yet authorized them.

They are Pfizer’s Comirnaty, which is also an mRNA vaccine, as well as Novavax’s protein-based vaccine.

This report by The Canadian Press was first published Sept. 17, 2024.

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

The Canadian Press. All rights reserved.

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These people say they got listeria after drinking recalled plant-based milks

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TORONTO – Sanniah Jabeen holds a sonogram of the unborn baby she lost after contracting listeria last December. Beneath, it says “love at first sight.”

Jabeen says she believes she and her baby were poisoned by a listeria outbreak linked to some plant-based milks and wants answers. An investigation continues into the recall declared July 8 of several Silk and Great Value plant-based beverages.

“I don’t even have the words. I’m still processing that,” Jabeen says of her loss. She was 18 weeks pregnant when she went into preterm labour.

The first infection linked to the recall was traced back to August 2023. One year later on Aug. 12, 2024, the Public Health Agency of Canada said three people had died and 20 were infected.

The number of cases is likely much higher, says Lawrence Goodridge, Canada Research Chair in foodborne pathogen dynamics at the University of Guelph: “For every person known, generally speaking, there’s typically 20 to 25 or maybe 30 people that are unknown.”

The case count has remained unchanged over the last month, but the Public Health Agency of Canada says it won’t declare the outbreak over until early October because of listeria’s 70-day incubation period and the reporting delays that accompany it.

Danone Canada’s head of communications said in an email Wednesday that the company is still investigating the “root cause” of the outbreak, which has been linked to a production line at a Pickering, Ont., packaging facility.

Pregnant people, adults over 60, and those with weakened immune systems are most at risk of becoming sick with severe listeriosis. If the infection spreads to an unborn baby, Health Canada says it can cause miscarriage, stillbirth, premature birth or life-threatening illness in a newborn.

The Canadian Press spoke to 10 people, from the parents of a toddler to an 89-year-old senior, who say they became sick with listeria after drinking from cartons of plant-based milk stamped with the recalled product code. Here’s a look at some of their experiences.

Sanniah Jabeen, 32, Toronto

Jabeen says she regularly drank Silk oat and almond milk in smoothies while pregnant, and began vomiting seven times a day and shivering at night in December 2023. She had “the worst headache of (her) life” when she went to the emergency room on Dec. 15.

“I just wasn’t functioning like a normal human being,” Jabeen says.

Told she was dehydrated, Jabeen was given fluids and a blood test and sent home. Four days later, she returned to hospital.

“They told me that since you’re 18 weeks, there’s nothing you can do to save your baby,” says Jabeen, who moved to Toronto from Pakistan five years ago.

Jabeen later learned she had listeriosis and an autopsy revealed her baby was infected, too.

“It broke my heart to read that report because I was just imagining my baby drinking poisoned amniotic fluid inside of me. The womb is a place where your baby is supposed to be the safest,” Jabeen said.

Jabeen’s case is likely not included in PHAC’s count. Jabeen says she was called by Health Canada and asked what dairy and fresh produce she ate – foods more commonly associated with listeria – but not asked about plant-based beverages.

She’s pregnant again, and is due in several months. At first, she was scared to eat, not knowing what caused the infection during her last pregnancy.

“Ever since I learned about the almond, oat milk situation, I’ve been feeling a bit better knowing that it wasn’t something that I did. It was something else that caused it. It wasn’t my fault,” Jabeen said.

She’s since joined a proposed class action lawsuit launched by LPC Avocates against the manufacturers and sellers of Silk and Great Value plant-based beverages. The lawsuit has not yet been certified by a judge.

Natalie Grant and her seven year-old daughter, Bowmanville, Ont.

Natalie Grant says she was in a hospital waiting room when she saw a television news report about the recall. She wondered if the dark chocolate almond milk her daughter drank daily was contaminated.

She had brought the girl to hospital because she was vomiting every half hour, constantly on the toilet with diarrhea, and had severe pain in her abdomen.

“I’m definitely thinking that this is a pretty solid chance that she’s got listeria at this point because I knew she had all the symptoms,” Grant says of seeing the news report.

Once her daughter could hold fluids, they went home and Grant cross-checked the recalled product code – 7825 – with the one on her carton. They matched.

“I called the emerg and I said I’m pretty confident she’s been exposed,” Grant said. She was told to return to the hospital if her daughter’s symptoms worsened. An hour and a half later, her fever spiked, the vomiting returned, her face flushed and her energy plummeted.

Grant says they were sent to a hospital in Ajax, Ont. and stayed two weeks while her daughter received antibiotics four times a day until she was discharged July 23.

“Knowing that my little one was just so affected and how it affected us as a family alone, there’s a bitterness left behind,” Grant said. She’s also joined the proposed class action.

Thelma Feldman, 89, Toronto

Thelma Feldman says she regularly taught yoga to friends in her condo building before getting sickened by listeria on July 2. Now, she has a walker and her body aches. She has headaches and digestive problems.

“I’m kind of depressed,” she says.

“It’s caused me a lot of physical and emotional pain.”

Much of the early days of her illness are a blur. She knows she boarded an ambulance with profuse diarrhea on July 2 and spent five days at North York General Hospital. Afterwards, she remembers Health Canada officials entering her apartment and removing Silk almond milk from her fridge, and volunteers from a community organization giving her sponge baths.

“At my age, 89, I’m not a kid anymore and healing takes longer,” Feldman says.

“I don’t even feel like being with people. I just sit at home.”

Jasmine Jiles and three-year-old Max, Kahnawake Mohawk Territory, Que.

Jasmine Jiles says her three-year-old son Max came down with flu-like symptoms and cradled his ears in what she interpreted as a sign of pain, like the one pounding in her own head, around early July.

When Jiles heard about the recall soon after, she called Danone Canada, the plant-based milk manufacturer, to find out if their Silk coconut milk was in the contaminated batch. It was, she says.

“My son is very small, he’s very young, so I asked what we do in terms of overall monitoring and she said someone from the company would get in touch within 24 to 48 hours,” Jiles says from a First Nations reserve near Montreal.

“I never got a call back. I never got an email”

At home, her son’s fever broke after three days, but gas pains stuck with him, she says. It took a couple weeks for him to get back to normal.

“In hindsight, I should have taken him (to the hospital) but we just tried to see if we could nurse him at home because wait times are pretty extreme,” Jiles says, “and I don’t have child care at the moment.”

Joseph Desmond, 50, Sydney, N.S.

Joseph Desmond says he suffered a seizure and fell off his sofa on July 9. He went to the emergency room, where they ran an electroencephalogram (EEG) test, and then returned home. Within hours, he had a second seizure and went back to hospital.

His third seizure happened the next morning while walking to the nurse’s station.

In severe cases of listeriosis, bacteria can spread to the central nervous system and cause seizures, according to Health Canada.

“The last two months have really been a nightmare,” says Desmond, who has joined the proposed lawsuit.

When he returned home from the hospital, his daughter took a carton of Silk dark chocolate almond milk out of the fridge and asked if he had heard about the recall. By that point, Desmond says he was on his second two-litre carton after finishing the first in June.

“It was pretty scary. Terrifying. I honestly thought I was going to die.”

Cheryl McCombe, 63, Haliburton, Ont.

The morning after suffering a second episode of vomiting, feverish sweats and diarrhea in the middle of the night in early July, Cheryl McCombe scrolled through the news on her phone and came across the recall.

A few years earlier, McCombe says she started drinking plant-based milks because it seemed like a healthier choice to splash in her morning coffee. On June 30, she bought two cartons of Silk cashew almond milk.

“It was on the (recall) list. I thought, ‘Oh my God, I got listeria,’” McCombe says. She called her doctor’s office and visited an urgent care clinic hoping to get tested and confirm her suspicion, but she says, “I was basically shut down at the door.”

Public Health Ontario does not recommend listeria testing for infected individuals with mild symptoms unless they are at risk of developing severe illness, such as people who are immunocompromised, elderly, pregnant or newborn.

“No wonder they couldn’t connect the dots,” she adds, referencing that it took close to a year for public health officials to find the source of the outbreak.

“I am a woman in my 60s and sometimes these signs are of, you know, when you’re vomiting and things like that, it can be a sign in women of a bigger issue,” McCombe says. She was seeking confirmation that wasn’t the case.

Disappointed, with her stomach still feeling off, she says she decided to boost her gut health with probiotics. After a couple weeks she started to feel like herself.

But since then, McCombe says, “I’m back on Kawartha Dairy cream in my coffee.”

This report by The Canadian Press was first published Sept. 16, 2024.

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

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B.C. mayors seek ‘immediate action’ from federal government on mental health crisis

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VANCOUVER – Mayors and other leaders from several British Columbia communities say the provincial and federal governments need to take “immediate action” to tackle mental health and public safety issues that have reached crisis levels.

Vancouver Mayor Ken Sim says it’s become “abundantly clear” that mental health and addiction issues and public safety have caused crises that are “gripping” Vancouver, and he and other politicians, First Nations leaders and law enforcement officials are pleading for federal and provincial help.

In a letter to Prime Minister Justin Trudeau and Premier David Eby, mayors say there are “three critical fronts” that require action including “mandatory care” for people with severe mental health and addiction issues.

The letter says senior governments also need to bring in “meaningful bail reform” for repeat offenders, and the federal government must improve policing at Metro Vancouver ports to stop illicit drugs from coming in and stolen vehicles from being exported.

Sim says the “current system” has failed British Columbians, and the number of people dealing with severe mental health and addiction issues due to lack of proper care has “reached a critical point.”

Vancouver Police Chief Adam Palmer says repeat violent offenders are too often released on bail due to a “revolving door of justice,” and a new approach is needed to deal with mentally ill people who “pose a serious and immediate danger to themselves and others.”

This report by The Canadian Press was first published Sept. 16, 2024

The Canadian Press. All rights reserved.

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