Jonathan Groot
jgroot.bsky.social
Jonathan Groot
@jgroot.bsky.social
Senior researcher @COPSAC
Opinions mine
Interested in equitable housing, heart- and animal-friendly diets and respiratory research
Reposted by Jonathan Groot
"Whereas a small change in transmissibility conditions is enough to stop flu in summer, Sars-CoV-2 can basically evolve its way over this barrier" – I spoke to The Guardian about why COVID doesn't seem that constrained by season: www.theguardian.com/world/2025/a...
What do we know about the Covid-19 virus five years on?
As the virus continues to evolve, experts assess its latest variants, seasonal prevalence and levels of vaccine uptake
www.theguardian.com
August 12, 2025 at 7:41 PM
Reposted by Jonathan Groot
I thought it might be helpful to do a more general immunology explainer which I can then build on for example when I discuss specific papers or political actions. Do let me know if its useful and other topics if so. This first one is a general one about how we tackle infections... 🧪 #ImmunoSky
Fundamental immunology 101: the basics of an immune response
Tackling infections
open.substack.com
August 4, 2025 at 4:58 PM
A good short summary. Imagine thinking that Robert FK Jr. would bring about a healthier America. Facts and myths about measles - The Lancet Infectious Diseases www.thelancet.com/journals/lan...
Facts and myths about measles
It seems ironic that Robert F Kennedy Jr, one of the most prominent antivaccine activists, has been made Secretary of Health and Human Services in the USA while one of the largest recent measles outbr...
www.thelancet.com
April 6, 2025 at 12:08 PM
Reposted by Jonathan Groot
En stor dag for adopterede fra Sydkorea - og os der har dem kær: www.dr.dk/nyheder/udla...

En Sydkoreansk kommission har nu anerkendt brud på menneskerettighederne og børnekonventionen, for økonomisk vinding.

Danmark har været én af de største modtagere men ignorerer sit ansvar. Borgerforslag 👇
March 26, 2025 at 9:46 PM
Reposted by Jonathan Groot
Worrying to see whooping cough cases on the rise in Louisiana with two infant fatalities reported. Do vaccinate to protect yourself and loved ones- safe effective vaccine offered from as early as a few months of age
Whooping Cough cases on the rise in Louisiana, two infant deaths reported
Louisiana is seeing an alarming rise in whooping cough cases, with the state’s Department of Health reporting two infant deaths within the last six months.
www.katc.com
March 22, 2025 at 6:38 AM
Reposted by Jonathan Groot
Do you remember BA.3—the weakling cousin of BA.1 & BA.2 that seemed to take the worst from each & had weaker ACE2 binding than even the ancestral Wuhan Virus?

After three years, BA.3 is back.

And it is transmitting.

Who saw this coming?
1/13
March 12, 2025 at 10:46 AM
Reposted by Jonathan Groot
📊 Key Findings:✔️ 3rd dose of mRNA reduced hosp risk by 50% compared to two doses.✔️ICU or death risk dropped by 53% for those with three doses.✔️Protection held across all ethnicities—with 👆strong results for Pacific (52% lower ICU/death risk).✔️ Older adults (50+) benefited most.👇
March 7, 2025 at 1:52 AM
Reposted by Jonathan Groot
The most fitting end to a day in which the regime just curbstomped our outbreak response capacity: an H5N1 patient in a hospital that’s also presumably full of seasonal flu patients.

www.reuters.com/business/hea...
Wyoming identifies first human case of bird flu
The Wyoming Department of Health said on Friday it has identified its first human case of H5N1 bird flu in the region, making it the third confirmed instance of hospitalization related to the infection in the United States.
www.reuters.com
February 15, 2025 at 4:50 AM
Reposted by Jonathan Groot
There's "being wrong in early in a pandemic" wrong and then there's "doubling down over and over again until you find yourself in bed with RFK Jr. and founding a whole-ass journal to discredit all of academic publishing along with all of medicine" wrong.

publichealth.realclearjournals.org
Journal of the Academy of Public Health
publichealth.realclearjournals.org
February 5, 2025 at 6:41 PM
Outside my current research area: but a message that increased saturated fat in the diet doesn’t influence LDL levels and cardiovascular endpoints is likely harmful. Because it does (even though there are as always small caveats).
pubmed.ncbi.nlm.nih.gov/32827219/
Reduction in saturated fat intake for cardiovascular disease - PubMed
The findings of this updated review suggest that reducing saturated fat intake for at least two years causes a potentially important reduction in combined cardiovascular events. Replacing the energy f...
pubmed.ncbi.nlm.nih.gov
February 4, 2025 at 7:25 AM
First post here :)
Happy to talk about equitable housing and an upcoming project in this webinar. Join if you are interested in this.
#ediaqi

www.eventbrite.com/e/1117935458...
A Breath of “Fair” Air: Combatting Indoor Air Inequality across Europe
Tackling indoor air inequality: how low-income and marginalised communities face worse air quality—and what can be done to fix it.
www.eventbrite.com
January 28, 2025 at 4:25 PM