Escherichia 1. A child with suspected colienteritis was delivered to the infectious disease hospital. Colibacillus was obtained from the child’s feces. How to determine whether this bacillus is of pathogenic variety?
A. By means of bacteriophage typing
B. Agglutination reaction with serum O C. Microscopy of stained smears
D. Based on the nature of its growth in Endo medium
E. Based on its biochemical properties
2. Red colonies spread in the large quantity in the Endo culture medium were revealed on bacteriological stool examination of a 4-month-old baby with the symptoms of acute bowel infection. What microorganism can it be?
A. Escherichia B. Salmonella C. Staphylococcus
D. Streptococcus E. Shigella
3. On bacteriological examination of the defecation of a 4-months-old baby with the symptoms of acute bowel infection there were revealed red colonies spread in the large quantity in the Endo environment. What microorganism can it be?
A. Staphylococcus B. Streptococcus
C. Shigella D. Salmonella E. Escherichia 4. From the defecation of a 6-year-old ill child, who has artificial feeding, the intestinal bacillus with antigen structure 0-111 is excreted. What is the diagnosis?
A. Food poisoning B. Dysentery-like disease
C. Gastroenteritis D. Coli-enteritis E. Cholera-like disease
5. Stool culture test of a 6-month-old bottlefed baby revealed a strain of intestinal rod-shaped bacteria of antigen structure 0-111.What diagnosis can be made?
A. Colienteritis B. Gastroenteritis
C. Choleriform disease
D. Food poisoning
E. Dysentery-like disease
6. Among junior children of an orphanage an outbreak of intestinal infection with signs of coli-enteritis was registered. In order to identify isolated causative agent it is necessary to:
A. Study antigenic properties of the causative agent
B. To determine sensitivity to antibiotics
C. To study sensitivity to bacteriophages
