Why wouldn’t they test everyone for prior exposure?
One, even a subtle change in a virus’s structure can make alarming changes in virulence..and virus’s change constantly. Does prior exposure to a ‘similar’ virus confer immunity? No one knows that at this point.
Second, can you imagine the cost and administrative nightmare of testing hundreds of millions of people for prior exposure? The cost of doing that would probably exceed the cost of vaccintaing everyone (but that’s just a guess).
Viruses are rampant, varied and ever changing...our knowledge about them is NOT complete, nor is our ability to determine by testing who may or may not be vulnerable.
As much as I distrust government, I do not routinely assume that there is always some ulterior motive to what government tries to do. Additionally, the information on Naturalnews.com and the Mercola site are no more reliable than other more traditional medical sites. Take it for what it is worth, but I am not a big believer in self-health/natural medicine....but then again, as I said, I am a MD.
CDC releases every week info on antigenic testing of seasonal and swine. SO far, swine is mostly unchanged (out of 172 tested, they found one which drifted?): Antigenic Characterization:
CDC has antigenically characterized 1 seasonal A (H1N1) and 172 2009 influenza A (H1N1) viruses collected since September 1, 2009. Antigenic characterization of seasonal A (H3N2) and B viruses recently received by CDC is in progress.
One seasonal influenza A (H1N1) viruses was tested and is related to the influenza A (H1N1) component of the 2009-10 Northern Hemisphere influenza vaccine (A/Brisbane/59/2007).
171 (99.4%) of 172 2009 A (H1N1) viruses tested are related to the A/California/07/2009 (H1N1) reference virus selected by WHO as the 2009 H1N1 vaccine virus and one virus (0.6%) tested showed reduced titers with antisera produced against A/California/07/2009.” http://www.cdc.gov/flu/weekly/ (week 42) The change was discovered in week 38, Sept 26.