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PUBLIC HEALTH REPORTS VOL. 40 DECEMBER 18, 1925 No. 51 THE NOTIFIABLE DISEASES PREVALENCE DURING 1924 IN STATES The tables which appear on the following pages have been com- piled from data furnished by the health officers of the several States, the District of Columbia, and insular possessions. The data for syphilis and gonorrhea were furnished by the Division of Venereal Diseases of the Public Health Service. The following is a list of the diseases included: Anthrax. Poliomyelitis. Cerebrospinal meningitis. Rabies in animals. Chicken pox. Rabies in man. Dengue. Rocky Mountain spotted fever. Diphtlheria. Scarlet fever. Goniorrhea. Septic sore throat. Influenza. Smallpox. Malaria. Syphilis. Measles. Tuberculosis (all forms and pulmonary). Muumps. Typhoid fever. Pellagra. Typhus fever. Pneumonia (all forms). Whooping cough. The following table shows the States (including the District of Columbia and insular possessions) for which morbidity and mortality data were received: Morbidity Mortality Morbidity Mortality Alabama -Alabama Nebraska- Tebraska. Arizona -Arizona. Nevada -Nevada. Arkansas -Arkansas. New Hampshire- New Hampshire.' California -California. New Jersey-New Jersey. Colorado -Colorado. New Mexico - New Mexico. Connecticut- Connecticut. New York-New York. Delaware -Delaware. North Carolina- North Carolina. District of Columbia..--. District of Columbia. North Dakota- North Dakota. Florida -Florida. Ohio -Ohio. Georgia -Georgia. Oklahoma-Oklahoma. lialho - - Idaho. Oregon -Oregon. Illinois -Illinois. Pennsylvania - Pennsylvania. Indiana -Indiana. Rhode Island Iowa -Iowa. South Carolina - South Carolina. Kansas- -- ansas. South Dakota- South Dakota. Kentucky- Kentucky. Tennessee-Tennessee. Louisiana -Louisiana. Texas-Texas. Mlaine -Maine. Vernmont -Vermont Maryland Maryland. Virginia -Virginia. Massachusetts - Massachusetts. Washington-W ashington. Michigan -Michigan. West Virginia-- est Virginia. Minnesota - Minnesota. Wisconsin -Wisconsin. Mississippi- Mississippi.' Wyoining-Wyoming. Alissoulri-M-Missouri. Hawai-i Territory- Hawaii Tqrritory. MIonitana - --- Montana. Porto Rico-Porto Rico. 1 Data not gi'ven by months. 697103°-25t--1 (2741) December 18, 1925 2742 For the purpose of comparison with States, the data for New York City are given in a separate table. The populations given in the tables and used in computing case and death rates were estimated as of July 1, 1924, unless otherwise indicated. For most of the diseases four tables are given: (1) Estimated expectancy, or average, (2) morbidity, (3) mortality, (4) rates. The estimated expectancy, given in the tables for some of the diseases, is the result of an attempt to ascertain from the experience of recent years how many cases of the disease under consideration might be expected in 1924. In most instances the estimated ex- pectancy is the median number of cases reported by the State for the years 1917 to 1923, inclusive. When several epidemics have occurred during these years, or when for other reasons the median is not satisfactory, epidemic years are excluded, and the estimated expectancy is the mean of the number of cases reported for the non- epidemic years. The aim has been to ascertain how many cases of each disease may reasonably be expected in the absence of epidemics. The column headed "Number of years" shows the number of years for which data are available for each State. In comparing the figures for 1924 with the estimated expectancy or with the average for preceding years, it should be borne in mind that there has been a gradual improvement in the reporting of com- municable diseases during the last few years. An increase in the numnber of cases reported may be due to better reporting, of the par- ticular disease rather than to an increase in the number of cases existing. A relatively large number of reported cases of a communicable disease, as indicated by a high case rate (and more especially when accompanied by a relatively small number of deaths, as indicated by a low fatality rate), usually means that the health department of that State is active and that the cases of the disease are being well reported by the practicing physicians. It does not necessarily mean that the disease is more prevalent in that State than in other States. A high fatality rate may mnean that the disease was unusually viru- lent in a State, that the physicians did not treat the disease in that State with the success usual elsewhere, or that the practicing phy- sicians did not report all of their cases. On the other hand, an un- usually low fatality rate may be due to the fact that the disease in the State was unusually mild, that the physicians treated it withl unusual success, that the practicing physicians reported their cases satisfactorily, or that the registration of deaths was incomplete, or the assignment of the causes of death inaccurate. In somne instances comparatively large numbers of cases of diseasec; reported in certain States may be due to the system of reporting, 2743 December 18, 1925 rather 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 isue(d by the United States Public Health Service for the years 1912 to 1923, inclusive (reprints numbered 163, 208, 298, 345, 426, 505, 551, 643, 681, 791, 879, and 974). Summary CHICKEN POX 47 States: I Cases reported, 1924 (population 111,600,680) -202, 081 Cases per 1,000 inhabitants, 1924 - 1. 81 46 States: 1 Cases reported, 1924 (population 108,563,905) - 197, 541 Average, years 1922 and 1923 -_ 141, 897 Cases per 1,000 inhabitants, 1924 - 1. 82 Cases per 1,000 inhabitants, average- __ 1. 33 44 States: ' Deaths registered, 1924 (population 103,540,196) - 123 Deaths per 1,000 inhabitants, 1924 - 0. 00 Cases reported for each death registered, 1924 - 1, 604. 86 DIPHTHERIA 47 States: 1 Cases reported, 1924 (population 111,600,680) - 119, 831 Estimated expectancy, based on years 1917-1923 - 141, 594 Cases per 1,000 inhabitants, 1924 - 1. 07 Cases per 1,000 inhabitants, estimated expectancy - 1. 34 46 States: 1 Deaths registered, 1924 (population 110,967,644) -9, 756 Deaths per 1,000 inhabitants, 1924 - 0. 09 Deaths per 100 cases, 1924 - 8. 19 INFLUENZA 46 States:1 Deaths registered, 1924 (population 110,967,644) - 20,147 Deaths per 1,000 inhabitants, 1924 - 0. 18 MEASLES 47 States: 1 Cases reported, 1924 (population 111,600,680) - 511, 305 Cases per 1,000 inhabitants, 1924 - _________ 4. 58 44 States: 1 Cases reported, 1924 (population 103,536,151) - 488, 917 Estimated expectancy, based on years 1917-1923 - 290, 923 Cases per 1,000 inhabitants, 1924 -_____ 4. 72 Cases per 1,000 inhabitants, estimated expectancy -2. 96 sThe District of Columbia is also included. December 18,1925 2744 46 States: 1 Deaths registered, 1924 (population 110,967,644) - 8, 370 Deaths per 1,000 inhabitants, 1924 -0. 08 Deaths per 100 cases, 1924 -1.64 MUMPS 41 States: Cases reported, 1924 (population 98,058,324) - -125, 354 Cases per 1,000 inhabitants, 1924 - - 1. 28 37 States: Cases reported, 1924 (population 91,149,888) -- - 124, 938 Average, years 1922 and 1923 - -49, 294 Cases per 1,000 inhabitants, 1924 - - 1.37 Cases per 1,000 inihabitants, average - 0. 55 39 States: Deaths registered, 1924 (population 93,512,052) - -81 Deaths per 1,000 inhabitants, 1924 - -0. 00 Cases reported for each death registered, 1924 -1, 528. 00 PELLAGRA 12 States: Cases reported, 1924 (population, 37,860,436)-8 860 34 States: ' Deaths registered, 1924 (population, 88,002,092) - 2, 969 Deaths per 1,000 inhabitants, 1924 -_-_-_- __- __- _ 0. 03 PNEUMONIA 45 States: 1 Deaths registered, 1924 (population, 110,338,641) -108, 700 Deaths per 1,000 inhabitants, 1924 - 0. 99 POLIOMYELITIS 38 States:1 Cases reported, 1924 (population, 91,462,119) --- 5, 199 Cases per 1,000 iinhabitants, 1924 __--- - 0. 057 36 States: 1 Cases reported, 1924 (population, 89,219,248) - - 5, 177 Estimated expectancy, based on years 1917-1923 - - 2, 033 Cases per 1,000 inhabitants, 1924 - -0. 058 Cases per 1,000 inhabitants, estimated expectancy- 0. 024 45 States: 1 Deaths registered, 1924 (population, 110,750,791) --- 1, 128 Deaths per 1,000 inhabitants, 1924 - -0. 010 SCARLET FEVER 47 States: 1 Cases reported, 1924 (population, 111,600,680) -184, 738 Estimated expectancy, based on years 1917-1923 -136, 688 Cases per 1,000 inhabitants, 1924 - 1. 66 Cases per 1,000 inhabitants, estimated expectancy- _ _ 1. 29 46 States: 1 Deaths registered, 1924 (population 110,967,644) - 3, 109 Deaths per 1,000 inhabitants, 1924 - 0. 03 Deaths per 100 cases, 1924 -1. 71 'The District of Columbia is also included. 2745 llecember 18, 1925 SMALLPOX 47 States: I Cases reported, 1924 (population, 111,600,680) _ 56, 488 Cases per 1,000 inhabitants, 1924 - -0. 51 45 States: 1 Cases reported, 1924 (population, 107,386,279) - - 52, 234 Estimated expectancy, based on years 1917-1923 - - 35, 746 Cases per 1,000 inhabitants, 1924 - - 0. 49 Cases per 1,000 inhabitants, estimated expectancy 0-O. 35 46 States: 1 Deaths registered, 1924 (population 110,967,644) - - 900 Deaths per 1,000 inhabitants, 1924 - -0. 01 Deaths per 100 cases, 1924 - -1. 59 TYPHOID FEVER 45 States: 1 Cases reported, 1924 (population, 106,084,846) - 34, 825 Estimated expectancy, based on years 1917-1923 -38, 791 Cases per 1,000 inhabitants, 1924 -0 . 33 Cases per 1,000 inhabitants, estimated expectancy -0. 39 44 States: 1 Deaths registered, 1924 (population, 105,451,810) -7, 212 Deaths per 1,000 inhabitants, 1924 - 0.