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Deonandan Profile picture
@deonandan
Oct 21, 2023 • 1 tweets • 1 min read • Read on X
Some people going on vaguely about the "risk/benefit" analysis of a COVID booster. This is actual Ontario surveillance data of COVID vaccine adverse event reporting. Risk of boosters is practically nonexistent.
publichealthontario.ca/-/media/Docume…
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More from @deonandan

Deonandan Profile picture
Oct 30, 2024
Currently in Ontario 2.3% are >85 yrs; by 2040 it will be 8%. Right now, >16% are over 65.

Currently, over 250K Ontarians live with dementia. By 2040, that number will double.

The need for elder care is PRESSING. Here are some quick thoughts for policy makers.

Thread [1/8]
Meanwhile, a third of Canadians 15-49 are childless. By 2040, that proportion is sure to increase, as the more fecund older demographic dies off.

Currently, 12% of Ontarians live alone. Among seniors, >25% of men are without a spouse, as are >50% of women.

[2/8]
What this means is that the traditional model of relying on family members to do elder care is NOT SUSTAINABLE. This is a looming population crisis.

[3/8]
Read 8 tweets
Deonandan Profile picture
Oct 25, 2024
Time for another thread that is sure to trigger lots of people. But it's a sleepy morning, so why not? I'm going to talk about immigration and population growth from the perspective of someone who studies demographics and population shifts.

Thread [1/12]
First, it's fairly obvious that population growth is bad for the environment. It also creates stresses on services and infrastructure, if those things are not accommodated. No question.

[2/12]
Population growth also increases social tensions, which are capitalized upon by nefarious political groups. Sadly, such cultural conflicts are historically unavoidable.

[3/12]
Read 12 tweets
Deonandan Profile picture
Jul 31, 2024
Ontario wastewater testing ends today. This is a colossally foolish policy decision. I discussed some of it at the link below. But I also want to list some of the issues in this thread.



[1/1]canadahealthwatch.ca/2024/06/12/whe…
Wastewater testing is passive. It requires us to do NOTHING, as opposed to other kinds of surveillance, which require us to get tested or submit information.

[2/2]
Wastewater testing is relatively inexpensive, something like $10-15 million for the program. This might sound like a lot of money. But it's a lot less than having a lab test thousands of PCR kits at the same frequency, while sampling a much greater number of people.

[3/3]
Read 8 tweets
Deonandan Profile picture
Jun 29, 2024
Lots of people are confused by the word "immunity." To scientists, there are essentially two kinds of immunity: humoral and cellular.

Cellular immunity destroys pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.

(Thread [1/4])
In other words, humoral immunity is what prevents initial infection. With respect to COVID vaccines and prior infection, clearly humoral immunity has waned and will continue to wane, so long as vaccines do not match prevalent variants.

[2/4]
Cellular immunity, on the other hand, is what prevents bad outcomes once you've become infected. COVID vaccines and prior infection still confer good cellular immunity in that they keep most people out of the hospital and morgue.

Clear?

[3/4]
Read 4 tweets
Deonandan Profile picture
Jun 19, 2024
In the event of a true H5N1 pandemic, we would need mRNA vaccines. Here's why:

(Thread [1/7])
1) Current flu vaccine is incubated in eggs. Eggs come from birds. During an actual BIRD flu pandemic, eggs could be compromised or in short supply.

[2/5]
2) I'm not sure we have enough eggs on hand to manufacture enough doses for even everyone in North America, let alone the world.

[3/7]
Read 7 tweets
Deonandan Profile picture
Jun 19, 2024
Why has Canada not ordered any pre-pandemic H5N1 vaccine? I really don't know. But I have some theories.

(Thread [1/5])
1) Their plan is to obtain virus for making vaccines, if/when needed. But we would first need to free up manufacturing capacity (i.e., flu eggs) after current seasonal flu vaccine has been manufactured.

[2/5]
2) They're afraid that if/when H5N1 makes leap to sustained human transmission, the mutation will render current vaccine stock ineffective.

[3/5]
Read 5 tweets

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