I was visiting with a friend last night, who is a nurse manager of our region's COVID-19 unit, told me that they have had a large number of people coming in with moderate to severe symptoms and that only 6 have tested positive for COVID-19; which is telling him that there are a lot of other viruses out there making people sick.
Whichever way a person takes this, the general information is correct.
I posted a graph earlier, of the results of testing samples from the WA area of patients presenting with symptoms of a respiratory illness earlier in the year. The highest numbers were from pathogens that cause the common cold. RSV (Respiratory Syncytial Virus) A and B were the next 2 highest causes, above both Influenza A and B. The collected samples indicated no community spread of Covid-19 prior to mid-February.
The testing of symptomatic patients since February has also returned a Covid-19 confirmation around 10% or less, and these are tests performed on people exhibiting symptoms of some kind of respiratory illness. As my previous post stated, there have been a lot of bugs circulating this season besides (on top of) Covid-19.
Another similar study from Stanford (no, not the idiotic Santa Clara study) was recently completed, examining samples collected in late 2019 from the Bay Area. The testing busts the theory that some people had, that Covid-19 has been spreading/circulating unknown in the US since late 2019.
https://www.sfgate.com/coronavirus/...-confirm-no-coronavirus-cases-in-15281991.php
When studying the epidemiology of any particularly virulent pathogen, there's an interesting psychological phenomenon that causes (some) people to want to believe they've already had it, based on any illness that produced symptoms that were in any way remotely similar.
I observed the same phenomenon with the Type-A Influenza H3N2 epidemic in 2017 - 2018 (the most severe Influenza season in the past decade, estimated to have killed ~62,000 people in the US, and it still pales in comparison to Covid-19, which has killed 90,000+ in just 3 months).
I'd been keeping tabs on the H3N2 epidemic as it swept Australia in the Summer of 2017 (their Winter flu season), knowing that it inevitably would hit the US.
Friends working in hospitals in the Houston and Dallas metro areas alerted me when their hospitals began seeing a large influx of flu patients in October. By November, they warned me that they were getting hit hard, to the point where they had to redirect patients to more rural facilities due to all the beds being full. The same was being reported in many hospitals in large metro communities in many of the Southern states.
I warned people I knew that it was going to hit the Midwest (it still wasn't very evident in the region in November), and against all rational thought based on actual data and evidence, had people tell me, "Oh, I'm pretty sure that's what I had back in July-August" etc.
It finally began to see widespread community transmission in the Midwest in late December - early January. It put 4 people I personally knew, in the hospital, and 3 of them were in their 20s.
What this long post is intended to indicate, is that despite what some would like to believe, we're not even close to being over this. Actual testing indicates that most countries (including the US), have at most, seen about 5% of the population infected thus far.
Aside from NY, where it's closer to 20% (and still a long way from the 70-80% necessary for herd immunity), the evidence at this time is that we DON'T have huge percentages of immune people in the community despite how much people would like to believe it.
I understand that it would be comforting to think that:
A) this isn't that serious
B) I've already had it, so I'm safe
C) everybody else has probably already had it so I'm/we're safe
but it's always smarter to examine the available data to make decisions and choices with, rather than hopes and wishes.
P.S.
I wanted to add, this post is not meant as a critique or directed at anyone here. It's purpose is to provide perspective, in light of the groups of people I've observed who would like to believe that this pandemic is over, and despite evidence to the contrary, that there are a lot of hidden immune individuals who've already had it, and thus brought us (closer) to herd immunity.