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Norovirus: What to know about the ‘extremely common’ bug as cases rise in Canada

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The very contagious norovirus that is known for causing inflammation of the stomach and intestines is rising across the country — but it is not uncommon during this time of the year, according to the Public Health Agency of Canada (PHAC).

The number of cases of norovirus has been on the rise “both at the national level and within several provinces,” since January, PHAC confirmed to Global News in an email Wednesday. Infections have increased in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, and New Brunswick as well as Newfoundland and Labrador, the agency said.

The agency noted that the number of cases reported to the National Enteric Surveillance Program (NESP) since Jan. 1 “is generally comparable with the number of cases reported in the same seasonal period of previous years (i.e., 2015 – 2019).” The agency uses different surveillance systems to monitor outbreaks of norovirus, including the NESP which oversees data for 14 different pathogens that cause foodborne illness.

While there is no prescription medication to treat norovirus, according to Health Canada’s website, “most people begin to feel better on their own” within two to three days of infection.

There are no “long-term health effects. People can also get norovirus more than once,” the website states.

According to Dr. Isaac Bogoch, an infectious diseases specialist at Toronto General Hospital, many people experience “pretty significant nausea and vomiting” post-infection, “but then people tend to recover over the next couple of days.”

Some symptoms of norovirus include diarrhea, stomach pain, and cramps. Some may also experience chills, fatigue, headache, muscle aches and even low-grade fever, Health Canada states on its website.

“It’s important to remember that norovirus, sadly, is extremely common,” Bogoch told Global News. “The real treatment for this is rest and keeping up with fluids and electrolytes.”

 

How does norovirus spread?

Norovirus spreads through sharing food or utensils with an infected person, according to Health Canada’s website. It can also spread if one touches their mouth without washing hands after touching a contaminated surface.

Eating contaminated food or drinking contaminated liquids is also responsible for the spread norovirus between people, the website states.

According to PHAC, about four million people in Canada get sick every year from the food they consume. “Norovirus causes more than 1 million cases of non-travel related foodborne illness each year,” the agency said.

However, most people make “a full recovery,” from norovirus, said Bogoch.

“We just have to watch for more vulnerable individuals, especially the youngest and the oldest who might not be able to keep up with their fluids and electrolytes,” the doctor said.

Cases of norovirus have been on the rise in the United States as well. According the to the U.S. Centre for Centers for Disease Control and Prevention (CDC), from August 2022 to early January, 225 norovirus outbreaks were reported by states taking part in a federal surveillance program.

Norovirus can easily contaminate food and water because it only takes a very small amount of virus particles to make a person sick, the U.S. CDC says on their website.

“Food and water can get contaminated with norovirus in many ways,” the agency states. Moreover, food that “is grown or harvested with contaminated water, such as oysters harvested from contaminated water, or fruit and vegetables irrigated with contaminated water in the field,” can lead to the spread of norovirus.

 

How to prevent the virus from spreading

Bogoch said PHAC’s “surveillance for this is as good as it can be,” so the key things for Canadians to follow in order to curb spread are hand sanitization and staying home when they feel sick.

“Soap and water (are) the most appropriate way to wash your hands. Norovirus is pretty hardy. It can stick to surfaces and survive on surfaces rather easily,” cautioned Bogoch.

The norovirus is quite resistant to heat and cold, said Bogoch and it can also withstand alcohol. So, “the alcohol hand sanitizers don’t do as good a job as soap and water.”

Noroviruses can infect people of all ages, according to Bogoch and most outbreaks occur in clusters and in places where people come in close contact like schools, cruise ships or hospitals.

But there are ways to protect oneself and other people.

Health Canada says additional precautions like cooking shellfish thoroughly before eating, especially oysters and clams, as well as raw fruits and vegetables, help curb the virus from spreading. Other recommendations from the agency include cleaning and disinfecting surfaces “after an episode of illness” and immediately washing clothing and linens “that are soiled with vomit or diarrhea.”

 

Why is the norovirus spreading now?

According to PHAC, during the height of the COVID-19 pandemic period in 2020, people were wearing masks, hand sanitizing more frequently and practicing physical distancing with others, which “significantly reduced” the spread of pathogens like the norovirus.

“Comparison of norovirus cases reported to date in 2023 against those reported during the height of the COVID-19 pandemic period (i.e., 2020 – 2022) should be carried out with caution,” said PHAC, “as several factors associated with the pandemic resulted in significantly reduced reporting of enteric pathogens, including norovirus.”

Bogoch also pointed out that a lot of times cases of norovirus go unreported as many don’t seek care for it.

“A lot of the time people that get this don’t need to seek care. They have a terrible bout of vomiting or sometimes diarrhea, and it gets better in a day or two,” said Bogoch.

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Whooping cough is at a decade-high level in US

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MILWAUKEE (AP) — Whooping cough is at its highest level in a decade for this time of year, U.S. health officials reported Thursday.

There have been 18,506 cases of whooping cough reported so far, the Centers for Disease Control and Prevention said. That’s the most at this point in the year since 2014, when cases topped 21,800.

The increase is not unexpected — whooping cough peaks every three to five years, health experts said. And the numbers indicate a return to levels before the coronavirus pandemic, when whooping cough and other contagious illnesses plummeted.

Still, the tally has some state health officials concerned, including those in Wisconsin, where there have been about 1,000 cases so far this year, compared to a total of 51 last year.

Nationwide, CDC has reported that kindergarten vaccination rates dipped last year and vaccine exemptions are at an all-time high. Thursday, it released state figures, showing that about 86% of kindergartners in Wisconsin got the whooping cough vaccine, compared to more than 92% nationally.

Whooping cough, also called pertussis, usually starts out like a cold, with a runny nose and other common symptoms, before turning into a prolonged cough. It is treated with antibiotics. Whooping cough used to be very common until a vaccine was introduced in the 1950s, which is now part of routine childhood vaccinations. It is in a shot along with tetanus and diphtheria vaccines. The combo shot is recommended for adults every 10 years.

“They used to call it the 100-day cough because it literally lasts for 100 days,” said Joyce Knestrick, a family nurse practitioner in Wheeling, West Virginia.

Whooping cough is usually seen mostly in infants and young children, who can develop serious complications. That’s why the vaccine is recommended during pregnancy, to pass along protection to the newborn, and for those who spend a lot of time with infants.

But public health workers say outbreaks this year are hitting older kids and teens. In Pennsylvania, most outbreaks have been in middle school, high school and college settings, an official said. Nearly all the cases in Douglas County, Nebraska, are schoolkids and teens, said Justin Frederick, deputy director of the health department.

That includes his own teenage daughter.

“It’s a horrible disease. She still wakes up — after being treated with her antibiotics — in a panic because she’s coughing so much she can’t breathe,” he said.

It’s important to get tested and treated with antibiotics early, said Dr. Kris Bryant, who specializes in pediatric infectious diseases at Norton Children’s in Louisville, Kentucky. People exposed to the bacteria can also take antibiotics to stop the spread.

“Pertussis is worth preventing,” Bryant said. “The good news is that we have safe and effective vaccines.”

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AP data journalist Kasturi Pananjady contributed to this report.

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The Associated Press Health and Science Department receives support from the Robert Wood Johnson Foundation. The AP is solely responsible for all content.

The Canadian Press. All rights reserved.

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Scientists show how sperm and egg come together like a key in a lock

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How a sperm and egg fuse together has long been a mystery.

New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal kingdom, from fish to people.

“We discovered this mechanism that’s really fundamental across all vertebrates as far as we can tell,” said co-author Andrea Pauli at the Research Institute of Molecular Pathology in Vienna.

The team found that three proteins on the sperm join to form a sort of key that unlocks the egg, allowing the sperm to attach. Their findings, drawn from studies in zebrafish, mice, and human cells, show how this process has persisted over millions of years of evolution. Results were published Thursday in the journal Cell.

Scientists had previously known about two proteins, one on the surface of the sperm and another on the egg’s membrane. Working with international collaborators, Pauli’s lab used Google DeepMind’s artificial intelligence tool AlphaFold — whose developers were awarded a Nobel Prize earlier this month — to help them identify a new protein that allows the first molecular connection between sperm and egg. They also demonstrated how it functions in living things.

It wasn’t previously known how the proteins “worked together as a team in order to allow sperm and egg to recognize each other,” Pauli said.

Scientists still don’t know how the sperm actually gets inside the egg after it attaches and hope to delve into that next.

Eventually, Pauli said, such work could help other scientists understand infertility better or develop new birth control methods.

The work provides targets for the development of male contraceptives in particular, said David Greenstein, a genetics and cell biology expert at the University of Minnesota who was not involved in the study.

The latest study “also underscores the importance of this year’s Nobel Prize in chemistry,” he said in an email.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

The Canadian Press. All rights reserved.

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Turn Your Wife Into Your Personal Sex Kitten

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