-9-
:
another all these afford a ready moana of conveymon of the organism,but readily
preventablo when it once osmos te be reso grå ned,
10%
These, however,are not se important as the ens first namod—the expsoteration habit --for intestinal tuberculosis, as show in this serios,is not the cemen weds of in-
fection of childrm out here,
+
Dr Chaussé compared the infection arising from dried sputum and that from dropleta of sportom and saliva directly inhaled and laid stress on the fact that it is excep- tional for these living with tubereulous subjects to receive directly the sough of the latter, and the droplets are very seen diluted with a large quantity of air and thus denger is lessened. Further, these dreplots dry very quickly and their virulence is probably much diminished in ten days. Deposition occurs in a few hours at most, and,swing to the deposition and the drying, the droplets become reduced to the con-
digier
of infective dust, "Los gouttelettas bacillaires elles-même,comme facteurs de contagion de les phthisia, jouent le plus grand partie de leur rôle après leur dépôt at sous la ferve de poussières sòthes,de nouveau xebilisées dans l'atmosphère, When no precautions cro taken, and this is the rule, the sisthes,bedding, ete,,are seiled by the virus in large quantity, Then the waking up of the bed,brushing of elsthes, sweeping the flser,distribute the erganime 19 that healthy contacts bossus exposed to infection every day and all day long, for this dust may remain suspeal cal for several hours. Veroever, errents of air,movements on the part of the patients,
continually put the dust in motion,
Then, when the elder months seus an the Chinese take out their old slothing which has been stered away in sexs cupboard or dark cerner and wear that over their ether zamerita, When the house cleansing takes place these clothes are not disinfected, se that they are nearly, if not quite, as infectieus as when they were laid neids at the
termination of the previous seld weather.
Muttell has estimated that a patient with open tuberculesia nay expectarate 4000 million bacilli daily. In a dark, shut-in reom the chances of infection for a shil4 brought in contest with such a case are onervous. During the crawling ago those chances are still greater. It will be seen en parusål of the age table appended that of the 229 cases undor tan years of age 163 er 72.87% were three years old or
62.2% lees, and 185 or 20 under four years. Further,Dieuderné of Vartburg (1903) has proved that the nasal sesretien and dirt en the hands of shildren during the crawl- ing age, say 9 months to 34 years,im a very large proportion showed the presence of tubarele basilli, The opportunities for the repeated infestion of a child of the