The sources and modes of infection / by Charles V. Chapin.

  • Charles V. Chapin
Date:
1910
Catalogue details

Licence: Public Domain Mark

Credit: The sources and modes of infection / by Charles V. Chapin. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    reports that during the Spanish War flies covered with a white coating of Hme were often seen crawhng over the food, the lime showing that they had just come from the latrines where lime had been thrown over the fecal matter. Species of Flies. — Flies more often than any other insect have been accused of thus carrying disease germs. Of these by far the most common in dwellings is the housefly, Musca domestica, though other flies are not infrequently found. In New York Jackson found that 98 per cent of all flies captured were M. domestica. In London in 1908 Austen^ found that next to the house fly the most common species were Homa- lomyia canicularis, Calliphora erythrocephala and Muscina stabulans. In Providence in 1909 Sykes found all the above, and also considerable numbers of Lucilia coesar, Sarcophaga ? and Stomoxys calcitrans, and a few Sce?iopinus fen- estralis, but 99 per cent of the flies caught indoors were M. domestica. The bluebottle fly, Lucilia coesar, has been accused by Button^ of transmitting typhoid fever. Maus in the Philippines blames bluebottles for the spread of cholera. Mayer * states that some ants were seen to pass between cages containing mice, some of which were sick with mouse typhoid and some well. The well mice soon developed the disease, and agar plates so placed that the ants ran over them showed numerous colonies of the B. murium typhi. Cockroaches and Other Insects. — Engelmann ^ reports cockroaches extremely numerous in certain houses in Chicago where typhoid fever prevailed, and she attributed the spread of the disease to these insects. Weber* accuses various species of Psocidoe of carrying tubercle bacilli from cow to cow, and ' Austen, Rep. to Local Gov. Bd. on Pub. Health, n. s., 1909, No. 5. 2 Sykes, Rep. Supt. of Health, Providence, 1909, 13. ' Button, J. Am. M. Ass., Chicago, 1909, LHI, 1561. * Mayer, Miinchen med. Wchnschr., 1905, LH, 226. 5 Engelmann, Med. News, N. Y., 1903, LXXXII, 225. « Weber, N. York M. J. [etc.], 1906, LXXXIV, 884.