The cockle is liable to the same suspicion as the oyster of conveying the contamination of typhoid fever where the shores are polluted, but as it is boiled before being eaten it is probably less dangerous.
It is imperative that cream destined for butter-making should be free from pathogenic organisms. The organisms of cholera, typhoid fever and tuberculosis present in butter retain their vitality for a long time.
Epidemic outbreaks of other diseases - for instance, cholera, diphtheria and typhoid fever - are often preceded and followed by the prevalence of mild illness of an allied type; and t he true significance of this fact is one of the most important problems in epidemiology.
Such drainage as had at one time existed was allowed to get choked up, giving rise to typhoid fever of a virulent type.
The agglutinative action of the serum of a patient suffering from a bacterial disease, first described in the case of typhoid fever independently by Widal and by Griinbaum in 1896, though led up to by the work of Pfeiffer, Gruber and Durham and others.