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Dr. Theresa Tam Profile picture
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Dec 15 • 4 tweets • 3 min read
1/4 Co-circulation of #COVID19, #influenza & #RSV viruses is causing significant strain on health care systems. Very young & elderly people and those with pre-existing medical conditions, continue to be at highest risk for serious illness.

canada.ca/en/public-heal…
2/4 Most worrisome is an increase in influenza-related hospitalisations. Also, sentinel paediatric hospital data suggest a shift to a ↑ proportion of hospitalized cases in 10-16 year-olds, compared to seasons prior to the #COVID19 pandemic.

canada.ca/en/public-heal…
3/4 However, the highest cumulative hospitalization rates for influenza continue to be among young children under 5 years of age and weekly pediatric hospitalization numbers remain above typical peak season levels.
4/4 Tragically, due to high numbers of paediatric influenza cases we’re also seeing higher than usual numbers of influenza-related ICU admissions & deaths in children. #VaccinesPlus can help reduce severe outcomes from respiratory viruses.

canada.ca/en/public-heal…

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More from @CPHO_Canada

Dr. Theresa Tam Profile picture
Dec 14
1/4 Today, as co-chairs of the Special Advisory Committee on the Epidemic of #OpioidOverdoses, Dr. Yves Léger and I are releasing the latest national data on the #OverdoseCrisis.
canada.ca/en/public-heal…
2/4 These latest data show the tragic and continued increase in average daily deaths and hospitalisations due to opioid-related overdoses in Canada in 2021, compared to earlier years. Image
3/4 From April to June 2022, a total of 1,652 people lost their lives, while 1,163 were hospitalized due to an opioid-related overdose. #StopOverdoses Image
Read 4 tweets
Dr. Theresa Tam Profile picture
Sep 7
(1/5) Today, Canada’s Chief Medical Officers of Health are reinforcing the importance of staying up to date with vaccines to maintain protection against COVID-19 and other vaccine preventable diseases
canada.ca/en/public-heal…
(2/5) We are also celebrating the collaboration and efforts of jurisdictions, Indigenous partners, healthcare workers, individuals and communities. Our continued collective efforts will be integral to our emergence from this pandemic.
(3/5) With #COVID19Vaccines now available to anyone 6 months or older, staying up to date means getting a primary series and then #BoosterDoses when you are eligible, recognizing jurisdictions’ programs may differ based on epidemiology and programmatic considerations.
Read 5 tweets
Dr. Theresa Tam Profile picture
Jul 6
1/5 Today, the COVID-19 Immunity Task Force (CITF) announced seroprevalence results from 21 studies funded by the Government of Canada, estimating the level of infection during the Omicron wave up to the end of May 2022. covid19immunitytaskforce.ca/the-omicron-ts…
2/5 Antibodies to certain blood proteins known as “nucleocapsids” only develop in those who’ve been infected. So detecting their presence in blood (seroprevalence) is a way to estimate the proportion of people with past #SARSCoV2 infection.
3/5 CITF results confirm the massive scale of the #Omicron wave. Before Omicron arrived in Dec 2021, ~7% of Canadians had infection-acquired antibodies to #SARSCoV2. Then from Dec 2021 to May 2022, that proportion rose to 45%!
Read 6 tweets
Dr. Theresa Tam Profile picture
May 11
1/5 The Public Health Agency of Canada is aware that @SickKidsNews has reported cases of acute hepatitis of unknown origin in children to @ONTHealth. This is a relatively rare condition that does occur in Canada. In many cases, an underlying cause cannot be found.
2/5 Information on these and other cases is being further reviewed by health authorities. Those that meet the case definition will be reported to @GovCanHealth to be included in the national investigation.
3/5 We do not know if we are seeing an increase in the number of cases of acute hepatitis of unknown cause in children. More information is needed to assess the situation and any potential risks to people in Canada.
Read 5 tweets
Dr. Theresa Tam Profile picture
May 9
1/5 #COVID19 key concerns 🇨🇦 : as public health measures have eased and we resume more activities and connections, other serious infectious diseases, such as influenza and measles, are making a comeback. canada.ca/en/public-heal…
2/5 #COVID19 is still circulating across the country and Canada is reporting increased #influenza activity in recent weeks, late in the 2021-22 season. This includes the first outbreaks and a sharp rise in influenza detections, mostly in ages <45 years.
canada.ca/en/public-heal…
3/5 .@UNICEF & @WHO report a 79% increase in worldwide measles cases in Jan-Feb 2022 compared to the same time last year, a worrying sign of overall heightened risk for spread of vaccine preventable diseases (VPD) that could trigger larger outbreaks.
who.int/news/item/27-0…
Read 5 tweets
Dr. Theresa Tam Profile picture
Apr 19
1/4 #COVID19 key concerns 🇨🇦 : after weeks of increasing transmission, hospitalisation rates are rising in many jurisdictions and across most age groups. Rates of hospital/ICU admission/death remain highest in older adults, aged ≥60 years.
health-infobase.canada.ca/covid-19/epide…
2/4 With #COVID19 still spreading widely in Canada, it’s not too late and very important to get the best possible protection against severe illness by keeping #COVID19Vaccines up-to-date, including #COVID19Booster dose(s) as recommended. canada.ca/en/public-heal…
3/4 Evidence shows that 2 doses of mRNA #COVID19Vaccines generally maintain good effectiveness against severe outcomes across variants, and a booster further increases vaccine effectiveness to over 90% against severe outcomes. canada.ca/en/public-heal…
Read 4 tweets

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