than to unusual prevalence of the diseases. For instance, in Mississippi physicians report some diseases monthly to the State health officer, giving the number of cases occurring in their practice during the month. This method of reporting probably is responsible, in part, at least, for the comparatively large number of cases of certain diseases reported in Mississippi. Tabulations of reported cases and deaths from communicable diseases, similar to the tables here presented, have been issued by the United States Public Health Service for the years 1912 to 1921, inclusive (reprints numbered 163, 208, 298, 345, 426, 505, 551, 643, 681, and 791). The number of cases of diphtheria reported per thousand inhabitants fell from 2.02 in 1921 to 1.59 in 1922, a decrease of 21 per cent. The rate, however, was higher in 1922 than the median for recent years, which was 1.33 per thousand. The death rate from diphtheria fell 12 per cent, from 0.16 per thousand in 1921 to 0.14 in 1922. The deaths per hundred cases, however, rose from 8.07 in 1921 to 8.73 in 1922, an increase of 8 per cent. The reports indicated improvement in the number of cases of measles as compared with 1921 and with recent years. The deaths per thousand population and the fatality rate from this disease in 1922 were the same as those recorded for 1921. Cases of scarlet fever per thousand population fell from 1.86 in 1921 to 1.50 in 1922, and the number of deaths registered from this disease decreased from the 1921 rate of 0.05 per thousand to 0.03 in 1922. The number of cases of smallpox reported in 1922 was about onethird of the number reported in 1921, but the death rate per thousand increased from 0.006 in 1921 to 0.01 in 1922. An analysis of the tables shows that most of the increase in the number of deaths occurred in a few States where the disease assumed a virulent form, notably in Arizona and Colorado. Continued improvement is indicated by the figures for typhoid fever. As compared with 1921, the number of cases per thousand population decreased 26 per cent, and the death rate fell 11 per cent. The deaths registered per hundred reported cases increased from 19.94 in 1921 to 23.07 in 1922. Summary. CHICKEN POX. 46 States, District of Columbia, Hawaii, and Porto Rico: 131.018 1.22 40 States, District of Columbia, Hawaii, and Porto Rico: Deaths registered, 1922 (population, 98,252,556). Deaths per 1,000 inhabitants, 1922.. 70 0.00 Deaths per 100 cases, 1922.... .05 DIPHTHERIA. 45 States. District of Columbia, Hawaii, and Porto Rico: Cases per 1,000 inhabitants, 1922. Cases per 1,000 inhabitants, median.... 44 States, District of Columbia, Hawaii, and Porto Rico: INFLUENZA. 39 States, District of Columbia, and Hawaii: 31 States, District of Columbia, and Hawaii: Deaths registered, 1922 (population, 81,117,712). Cases reported for each death registered, 1922. MEASLES. 166.038 129, 695 1.59 1.33 14.770 0.14 8.73 328, 539 3. 66 20,271 0.25 15.83 SCARLET FEVER. 45 States, District of Columbia, and Hawaii: Cases reported, 1922 (population, 103,146,290). Cases per 1,000 inhabitants, 1922.. Cases per 1,000 inhabitants, median... 42 States and District of Columbia: Deaths registered, 1922 (population, 102,291,810).... Deaths per 100 cases, 1922. 155, 141 117,999 1.50 1.23 3, 320 0. 03 2.11 SMALLPOX. 43 States, District of Columbia, Hawaii, and Porto Rico: Cases reported, 1922 (population, 103,818,256). Cases per 1,000 inhabitants, 1922.. Cases per 1,000 inhabitants, median... 43 States, District of Columbia, Hawaii, and Porto Rico: Deaths registered, 1922 (population, 104,219,120).. Deaths per 1,000 inhabitants, 1922.. Deaths per 100 cases, 1922. 31.691 60. 194 0.31 0.62 841 0.01 2.68 TYPHOID FEVER. 44 States, District of Columbia, Hawaii, and Porto Rico: Cases reported, 1922 (population, 102,042,710) 31,400 Cases reported, median, 1913 to 1921. 55.627 Cases per 1,000 inhabitants, 1922.. 0.34 Cases per 1,000 inhabitants, median.. 43 States, District of Columbia, Hawaii, and Porto Rico: Deaths registered, 1922 (population, 101,997,270).. Deaths per 1,000 inhabitants, 1922. *The States for which the mortality data are given are not the same group of States as that for which case data alone are given. |