PARATYPHOID FEVER ool 
of foods in public places are examined for various diseases which arc 
transmissible through foods. 
In an effort to control and keep in touch with “ carriers’ the Cal- 
ifornia State Board of Health causes the following agrcement to be 
entered into between the “ carrier’ and the department. (Cumming, 
1917). 
I have this day been informed that my excreta coniain typhoid 
bacilli and that, unless unusual precautions are taken, persons will con- 
tract the infection from me. Realizing this danger I agree to observe 
the precautions stated below, and request that I be permitted to remain 
in free communication with other persons. 
1. I will take no part in the preparation or handling of food which 
will be consumed by persons outside of my immediate family, and I 
will not participate in the management of a boarding house, restaurant, 
food store, or in any other occupation involving the preparation or 
handling of food. 
2. I will not dispose of my excretions in a toilet to which flies have 
access without first exposing such excretions to either a 5 per cent 
dilution of liquor formaldehyde or 5 per cent phenol (carbolic acid). 
3. I will notify the local health officer of any cases of typhoid among 
persons with whom I come in contact. 
4, J will inform that local health officer of any contemplated change 
of residence so that he can notify the State Board of Health and 
obtain its approval. 
5. I will submit specimens for cxamination when requested by the 
State Board of Health. 
6. I will fill out the following report blank when submitted to me 
semiannually, and return the same to the California State Board of 
Health: 
‘“T have, during the last six months, complied to the best of my 
knowledge with the five separate agreements entered into between 
mysclf and the California State Board of Health. Precautions involved 
in these separate agreements are for the purpose of preventing typhoid 
infection.” 
That ‘ carriers’? may be found among the animals is suggested by 
much recent data. The work of Mitchell and Bloomer (1914) seems to 
indicate that chickens may not become carriers although the authors 
recommend further study. 
Paratyphoid Fever. This infection is produced by a bacillus closely 
related to B. typhi but possessing certain distinct differences. Many 
cases of food poisoning have been traced to the paratyphi bacilli. Bain- 
