[Importance of anti-polysaccharide C titer in the diagnosis of streptococcal infections in children].

The research of antibodies for group A streptococcal polysaccharide (MSK) is affirming itself more and more for its value among serological researches of the streptococcal infection. Present work offers a compared evaluation between antipolysaccharidic C and antistreptolisinic titres, revealed during acute streptococcal infections, in paediatric practice. The study regards a group of a hundred children admitted in hospital for symptoms relating to streptococcal infection or upper respiratory tract infections of viral etiology (control group). The research of antipolysaccharidic C titer resulted positive in 88% of the streptococcal infection cases, against the positivity of 62% of ASO. The determination of MSK, already well-known for its quick reply, has shown its full value between the age-range of 1-3: in half of the cases regarding children below the age of 3, the ASO titer remained negative, instead there was a quick reply of MSK in all the cases: it is confirmed the utility of inserting the MSK among the screening tests of fever diseases of suspected bacterial nature in children.