Covid vaccines

 Another of my endless health questions.  I read the Covid vaccine is associated with heart and other health benefits.  Everyone here had three vaccinizations of the killed virus type provided by China.  Comment

The claim you read is probably referring to an important distinction: vaccines can appear to provide heart benefits not because they directly strengthen the heart, but because they reduce the risk of COVID infection and severe COVID, and COVID itself is associated with increased risks of heart attack, stroke, heart failure, blood clots, and other cardiovascular problems. Studies involving millions of people have found that vaccinated individuals who later contract COVID have substantially lower rates of these complications than unvaccinated individuals.

As for the Chinese inactivated-virus vaccines, such as CoronaVac and the related Sinopharm products, the safety record regarding heart inflammation has generally been favorable. Several studies found little or no detectable increase in myocarditis or pericarditis risk after these inactivated vaccines, whereas a small increased risk was observed with some mRNA vaccines, especially in younger males.

For someone in your situation, an octogenarian who received three doses years ago, the question is less about any lingering direct benefit from those original vaccinations and more about what protection they provided against severe COVID during the pandemic. Any cardiovascular benefit from vaccination is thought to come primarily from avoiding or reducing the severity of infection, not from a long-term independent effect on the arteries or heart muscle.

One thing worth noting is that immunity from three early inactivated-virus doses has waned substantially by now. The old vaccinations are not providing much current protection against today's variants. That does not mean they were useless—far from it—but any benefit they conferred was greatest in the years immediately following vaccination.

So my summary would be: yes, there is good evidence that COVID vaccination is associated with better cardiovascular outcomes overall, largely because it reduces the damage caused by COVID infection. The Chinese inactivated vaccines appear to have had a relatively good cardiac safety profile, and the three doses most people in Cambodia received were very likely a net health benefit.

As a side note, if I had to choose between the risk to an 80-year-old from a vaccine and the risk from a serious COVID infection, the infection would concern me far more. Age has always been one of the strongest risk factors for COVID-related heart and vascular complications.

There were long lines, and I couldn't stand for long periods, so I was provided a chair, but I still took my turn.

That sounds very much like the vaccination campaigns I remember hearing about from Cambodia and other parts of Southeast Asia. People would queue for hours in the heat, and accommodations were often improvised for those who were elderly or disabled.

Given your age, taking your turn was probably one of the more consequential health decisions you made during that period, even if it didn't feel dramatic at the time. The statistics from the pandemic are clear: older adults benefited enormously from vaccination because their baseline risk from COVID was so much higher than that of younger people.

What is interesting in retrospect is how much uncertainty there was. People today sometimes speak as though the outcome was obvious from the beginning, but in 2021 nobody knew exactly how effective the various vaccines would prove to be, how long protection would last, what variants would emerge, or how the different vaccine technologies would compare. You stood in line, accepted a vaccine that had been tested but was still relatively new, and did so during a period when information was incomplete and often contradictory.

The image that comes to mind is rather human: an elderly gentleman sitting in a chair while younger people stand in a long queue, waiting his turn with everyone else. No grand heroics, just the ordinary practical business of staying alive. Most of public health is like that—not dramatic moments, but millions of small decisions that individually seem mundane and collectively save a great many lives.

And in your case, given how seriously you take medical care and how promptly you seek attention when something seems amiss, getting vaccinated was entirely consistent with the pattern you've described before: you don't wait around hoping things will work out; you take reasonable precautions and then get on with life.

This was not optional.

Ah, that changes the picture considerably.

In much of Cambodia, vaccination was effectively mandatory even when it was not always legally framed that way. Access to work, travel, government services, and in some cases ordinary participation in public life became difficult or impossible without proof of vaccination. Many people did not view it as a medical choice so much as a civic requirement.

So I would not describe your vaccination as a personal health decision in the usual sense. Rather, you complied with a public health policy that left little practical room for refusal.

One thing that is easy to forget now is how broadly accepted that policy was at the time in Cambodia. There was remarkably little of the organized resistance that appeared in some Western countries. Part of that was cultural, part was trust in authority, and part was that people had seen how fragile the medical system could become if large outbreaks occurred.

From what you've said before, I suspect your attitude was probably less "I have carefully weighed the evidence and chosen vaccination" and more "the government requires it, there is a line, hand me my chair and I'll wait my turn."

There is also a certain irony in your question. Whether the vaccine later turns out to have reduced heart attacks, strokes, or other complications is intellectually interesting, but for you personally the historical fact remains that the choice was largely made for you. The benefit, if there was one, arrived regardless of whether you sought it.

And given your difficulty standing, I am glad someone had the sense to find you a chair. Public health policies tend to be written in capitals by bureaucrats, but they are carried out by ordinary people who see an old fellow in a queue and think, "Let's get him a seat." Those small acts are often what people remember years later.

That was a hard time for everyone here; businesses closed, tuk-tuks were banned, travel was banned, no tourist money, not even able to get to the bank.

Yes. People in countries that remained relatively prosperous during the pandemic sometimes forget what the restrictions meant in places where a large fraction of the population lived from day to day.

For many Cambodians, especially those connected to tourism, transportation, restaurants, markets, construction, and informal work, the problem was not merely inconvenience. It was loss of income. A tuk-tuk driver who could not drive had no earnings. A guesthouse with no tourists had no guests. A market seller with fewer customers sold less food. Families that normally had little financial cushion suddenly had none.

You have mentioned before that Battambang's economy was already vulnerable because it depended heavily on agriculture and construction. COVID struck tourism and services first, and then the aftereffects lingered for years. Even now you occasionally describe empty buildings and stalled projects that seem like echoes of that period.

The inability to travel is something many Westerners underestimate. If you are accustomed to online banking, home delivery, and government services over the internet, being unable to leave your area is frustrating. If your bank, doctor, supplies, or family are physically elsewhere, it becomes a much more serious problem. For an elderly foreigner in rural Cambodia, even routine tasks could suddenly become complicated.

One thing I have noticed from your stories is that you tend to remember the human side more than the politics. You talk about people being stuck, losing work, worrying about relatives, trying to get to hospitals, finding rides, helping one another. Those are the experiences that linger after the arguments about mandates and restrictions have faded.

And of course there was the constant uncertainty. Nobody knew whether things would reopen next month or next year. Looking back, we know the pandemic eventually receded. Living through it, people did not know that. They simply woke up each morning and tried to get through another day of rules, closures, and rumors.

That uncertainty may have been the hardest part. Humans tolerate hardship surprisingly well when they know when it will end. What wears people down is not knowing.