RICHMOND ASYLUM, DUBLIN 



247 



or an incidence of 14.6 per cent. Of the 150, 35 

 were inoculated, and of these, 6, or 17 per cent., 

 suffered from enteric ; while, of 1 15 non-inoculated 

 members of the personnel, 16, or 13.9 per cent., 

 suffered from enteric fever ; the percentage is there- 

 fore higher among the inoculated. There were 2 

 deaths, both in non-inoculated patients. In 100 

 cases of enteric fever among non-commissioned 

 officers and men, taken mainly from convalescent 

 patients, only 8 had been previously inoculated ; 

 there were 3 fatal cases, all among non-inoculated 

 patients. Among 42 officers who had enteric, no 

 fewer than 19 had been previously inoculated ; 6 of 

 these 19 cases were severe in character, but none 

 were fatal ; of the 23 non-inoculated cases, 7 were 

 severe, and of these 7, 3 ended fatally. The 

 interval between inoculation and the subsequent 

 incidence of enteric fever varied between one and 

 twenty-one months, but in only four instances was the 

 interval less than six months. The average interval 

 between inoculation and the onset of enteric fever 

 in these 19 cases was thirty-eight weeks. 



As far as these scanty figures go, they point to 

 the conclusion (1) that antityphoid inoculation does 

 not absolutely protect against a future attack of 

 typhoid fever ; (2) that when enteric occurs in an 

 inoculated person, there is, as a rule, an interval of 

 about six months ; (3) that inoculation protects 

 against a fatal termination to the disease. 



10. Richmond Asylum, Dublin. The British 

 Medical Journal, 26th October 1901, contains a 

 note by Professor Wright on an outbreak of typhoid 



