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Articles sur Immunization

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President Joe Biden tested positive for COVID-19 on July 21, 2022, but was reportedly feeling well enough to work and take calls, as seen in this photo released by the White House. Adam Schultz/The White House via AP

Biden tests positive for COVID-19: An infectious disease doctor explains the risks and treatments available for the 79-year-old president

According to a letter from Biden’s doctor, the president has a runny nose, mild fatigue and a slight cough. The letter also noted that Biden began taking an antiviral drug the morning he tested positive.
Experts estimate that close to 90% of the U.S. population must be vaccinated to reach herd immunity for COVID-19. David McNew/AFP via Getty Images

What is herd immunity? A public health expert and a medical laboratory scientist explain

Vaccination campaigns like the ones that eventually eliminated polio and measles in the United States required decades of education and awareness in order to achieve herd immunity in the U.S. population.
Many U.S. states follow some form of “mature minor doctrine” allowing teens to make medical decisions without parental consent, including COVID-19 vaccination. Pete Bannan/MediaNews Group/Daily Times via Getty Images

Do US teens have the right to be vaccinated against their parents’ will? It depends on where they live

Some states have a legal framework allowing “mature minors” to make their own health care decisions – but they apply it in different ways, and some don’t have it at all.
Masking indoors will yet again be the new normal in Los Angeles County – and possibly elsewhere in the U.S. Lourdes Balduque/ Moment via Getty Images

Should fully immunized people wear masks indoors? An infectious disease physician weighs in

As Los Angeles County again mandates masking indoors – even for the fully vaccinated – local health officials in the U.S. are closely eyeing their own COVID-19 vaccination and infection rates.
Families and youth aged 12 and older lined up for a COVID-19 vaccine at Gordon A Brown Middle School in Toronto in May. THE CANADIAN PRESS/Nathan Denette

Parental COVID-19 vaccine hesitancy may be next challenge for vaccination campaigns

With youth ages 12 and over eligible for COVID-19 vaccination — and as trials for younger children move ahead — parental hesitancy is emerging as the new challenge for COVID-19 vaccine programs.
Vaccination has saved millions of lives throughout the course of history. Phynart Studio/E+ from Getty Images

Millions are rejecting one of humanity’s best weapons for saving lives: Vaccines

Vaccines have successfully curtailed viral diseases for decades. But as COVID-19 vaccination hesitancy shows, mistrust and misinformation continue to put lives at risk.
Premier Scott Moe speaks after a media tour of the COVID-19 mass immunization clinic and drive-thru immunization space in Regina on Feb. 18, 2021. The province also has mobile immunization vehicles to distribute the vaccine to remote communities. THE CANADIAN PRESS/Michael Bell

Mass COVID-19 immunization: Ensuring equitable access to vaccination

One important metric by which we can measure the success of our public health system: Ensuring everyone has access to immunization in their community.
Measles is contagious three or four days before a rash appears on the skin, making it highly communicable. (Shutterstock)

Why parents should fear measles, not the vaccine

Seven to 10 days in bed with a high fever and rash is the best outcome you can expect if your child catches measles. Brain damage or death is the worst.
Signs from a protest in 2015 against a California bill that prohibits parents from using a religious exemption as a reason to not vaccinate their children. The bill became law. AP Photo/Rich Pedroncelli

Anti-vaccination beliefs don’t follow the usual political polarization

Opposition to vaccines still prevents many children from getting needed preventative care. Understanding who is opposed, and why, can help, but the answers may surprise you.
A recent study of medical students and residents found they were reluctant to engage with parents who have vaccination fears. But listening to parents is important. Olena Yakobchuck/Shutterstock.com

The best shot at overcoming vaccination standoffs? Having doctors listen to – not shun – reluctant parents

A recent study suggests that shunning parents who are reluctant to vaccinate their kids isn’t the best strategy. A better strategy might be old-fashioned, but it works.
For viruses like dengue, being injected with the pathogen as in a vaccine can open the door to secondary infections. from www.shutterstock.com.au

Explainer: what are antibodies and why are viruses like dengue worse the second time?

Our immune system protects us but when it comes to some mosquito-borne disease, it can work against us. What are the implications for the development of a Zika virus vaccine?

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