Currently, the human risk factors associated with S. suis infection are: 1) Eating raw/undercooked pork meat, 2) Being a farm worker with hog contact or 3) Butchers. To date, there is no evidence of human-to-human transmission of S. suis.
Patterns of association are quite helpful in helping focus resources whether that is time, money, or any intervention we are seeking to implement.
How do we determine clinical significance? One way is to evaluate how many individuals need to be treated in order to obtain one more favorable outcome. This is the concept behind Number Needed to Treat (NNT).
Today, nearly all genetic suppliers of replacement breeding stock in North America are free of M.hyo.
How much has disease changed from its first introduction? Currently, we can find a new variant that appears to be a much milder form of PEDv, there are sow herds with chronic PEDv ( ~10% of breeding herds), a few sow herds with re-breaks (~ 3-5% of herds), ….
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