(Continued from Part 1.)
The Viral Distribution of Influenza-Like Illnesses
This subject has received little attention in the press that I have seen. I started thinking about this in response to various comments and memes talking about the lack of influenza cases in the last year. Many noted that in most years you have 10s of millions of flu cases estimated/recorded but this past year nearly none. Many viewed this as evidence that the COVID pandemic was nonsense, and perhaps they are right. However I went in different direction in my mind that I saw no one else going. What if the yearly “flu season” was not real? Or more specifically not really flu? So I did some research.
First I asked around among friends, family and acquaintances if they had ever had the flu. Most said yes. I asked if they had ever been laboratory tested for the flu. All but one said no. Interesting.
Then I looked for data on yearly flu numbers. I looked at this page at the CDC site.
I found this information:
“CDC estimates that the burden of illness during the 2018–2019 season included an estimated 35.5 million people getting sick with influenza, 16.5 million people going to a health care provider for their illness, 490,600 hospitalizations, and 34,200 deaths from influenza (Table 1). The number of influenza-associated illnesses that occurred last season was similar to the estimated number of influenza-associated illnesses during the 2012–2013 influenza season when an estimated 34 million people had symptomatic influenza illness.”
That is a lot of illness, doctor visits, hospital visits and deaths. So how do we know if they had the flu? What is our typical testing like? I found this at the NIH web site:
“U.S. World Health Organization (WHO) collaborating laboratories and National Respiratory and Enteric Virus Surveillance System laboratories, which include both clinical and public health laboratories throughout the United States, contribute to virologic surveillance for influenza. During September 30, 2018–May 18, 2019, clinical laboratories tested 1,145,555 specimens for influenza virus; among these, 177,039 (15.5%) tested positive, including 167,529 (95.0%) for influenza A and 9,510 (5.0%) for influenza B. The percentage of specimens testing positive for influenza each week ranged from 1.7% to 26.2%.”Continue reading“Actionable Information on COVID 19 – Part 2, by J.B.H.”