Mai exact, asa cum se precizeaza in articol, depistarea se face in max primele 6 zile de la inceputul manifestarii clinice, iar metoda este aceasta: " "vtec including E coli O157:H7 require special methods for detection in the laboratory. Microbiology laboratories can screen for E coli O157:H7 by inoculating stool specimens onto MacConkey medium containing sorbitol instead of lactose (17). If this screening stool culture is negative, O157:H7 and other vtec can be identified via methods available in reference laboratories, such as detection of free fecal verotoxin, detection of verotoxin genes through polymerase chain reaction amplification (18) or serological responses to verotoxins or the lipopolysaccharide of E coli O157 (19).
Prolonged excretion of E coli O157:H7 in stools is uncommon, and the rate of recovery of E coli O157:H7 from an infected individual falls after the sixth day of illness (20,21). Therefore, stool samples should be obtained as early in the clinical illness as possible. A negative culture from a stool obtained after the sixth day of illness does not exclude the possibility of E coli O157:H7 infection. Furthermore, a negative culture for O157:H7 at any point does not exclude the possibility of infection by other vtec serotypes."
de: Godspeed 15 Feb 2016 19:41
Prolonged excretion of E coli O157:H7 in stools is uncommon, and the rate of recovery of E coli O157:H7 from an infected individual falls after the sixth day of illness (20,21). Therefore, stool samples should be obtained as early in the clinical illness as possible. A negative culture from a stool obtained after the sixth day of illness does not exclude the possibility of E coli O157:H7 infection. Furthermore, a negative culture for O157:H7 at any point does not exclude the possibility of infection by other vtec serotypes."