different strains of flu can be more or less prevalent In the population from year to year observe the prevalence of positive flu virus tests on the graphs then describe how the most prevalent in flu strain changed during gt he years studied in the lab
The prevalence of positive flu virus tests varied from year to year, with some years showing higher rates of positive tests than others. From the graphs, it is evident that the most prevalent flu strains also changed over the years studied in the lab.
In the initial years, one particular flu strain (e.g., strain A) may have been more prevalent in the population, leading to a higher number of positive flu virus tests. However, in subsequent years, a different flu strain (e.g., strain B) may have emerged as the dominant strain, resulting in a shift in the prevalence of positive tests for that strain.
This fluctuation in the prevalence of different flu strains highlights the dynamic nature of the influenza virus and how it can evolve and change over time. It also underscores the importance of ongoing surveillance and monitoring of flu strains to better understand and combat the virus.