Thank you for mentioning the Mitsubishi Heavy Duty AC type.
a. This type is more expensive.
b. I have not checked out the present status of the SEER/EER on these machines. Do they now provide SEER of at least 23?
c. Also, have they now become quieter, both on the indoor unit and the outdoor unit, then I recall them to be?
Just another important few considerations, I believe.
True sterilising vaccines, ie vaccines that stop the onward transmission of a disease, are actually extremely rare. Generally it takes about 20 years of work to arrive at a vaccine that does that.
Take the measles vaccine. Its not a sterilising vaccine. If you take a class of kids, all vaccinated. The measles virus circulates among them. The vaccine isn't stopping that. What the vaccine stops is the development of measles, ie the rash.
FWIW, I am currently into day 4 or 5 (maybe day 9 if I count the asymptomatic period) of my latest Sars-Cov-2 infection. Its a little different from previous this time around, following a whizzbang tour of Portugal and Italy.
There are about 25,000 variants in circulation. But like symptoms, there lies the rub.
Defining "COVID-19" has always been problematic; we will be more clear what it means in 10-15 years. The official language is problematic. We talk about getting a "COVID test"; the tests do no such thing. All they are detecting is a recent Sars-Cov-2 infection. Its strange, because most people do know, by now, that a HIV test is not an AIDS test.
We know when the Measles vaccine works; kids don't come out in a rash. I think a COVID-19 diagnostic definition has to eventually include hospitalisation, ie you don't have COVID-19 if you don't meet criteria for admission to hospital, and that the effectiveness of the resulting vaccines is measured by hospitalisation rates. If you are sitting there, like me, nursing a thick head, dribbling nose and a hacking cough, you don't have COVID-19, though many will big it up a bit to elicit sympathy.
The test for attitudes is "I've just had a positive test. I'm off to the supermarket". Would you? I just did.
My wife will wear a mask, mostly when on a motorbike to protect her face, but often when around monks, which is actually the correct reason to wear a mask; to protect others, rather than to protect yourself (I could go into a discussion of filter dynamics, brownian forces, van der waals forces, but it will be fruitless now).
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