You can’t find out which influenza variant you have, either. I ran into that in 2009 when my boss demanded to know if I’d been out sick with H1N1, “Swine” flu. Her fear, or shall I say, “terror,” was because there were several children in our school, and one in my class, whose older sibling had been among a group of high school students from St. Francis Preparatory Academy who returned from Mexico carrying the disease. Several high schoolers were hospitalized with it upon return to the U.S.
In order to get that information, there has to be reason enough, ie, death, for the doctor to get the okay to send my blood to the CDC where they keep the reagents. She didn’t believe me and made me stay out until I got a doctor’s note stating there was no chance of my being contagious. (I had the usual aftermath cough of the flu.). I missed another ten days of work, without pay, until I got the note from an infectious disease doctor, for which I had to pay out of pocket. My employer based insurance didn’t cover it, or I’d have had to have waited for two months for an appointment. The families with siblings were asked to leave the school and given refunds on tuition. Truth is stranger than fiction. The principal’s name was K a r e n !!