Moreover, we find that there are no fewer than 28 strains of this particular streptococcus, and that introduces complications.
But amendments are proposed to a few points, the most important of which is the parameter for faecal streptococci.
They discovered the streptococcus of scarlet fever, the toxin and the antitoxin serum.
The answer to the first part of the question is that up to the present 28 different types of haemolytic streptococcus have been identified.
The real, much more useful, marker is faecal streptococci, which is rarely measured.
There has also been extensive discussion with regard to the scientific basis for certain parameters such as faecal streptococci and enteroviruses.
There are also various so-called streptococci which come through the air, particularly in cowsheds where small particles of manure are flying about.
Streptococcus pyogenes seems to originate from the pharynx or hand lesions of a food handler.
