Epidemiology of Infectious Hepatitis 3rd Report. On the Mass Examination Taken for Shakurenzi Hamlet

The mass examination was carried out in Shakurenji, Kama- Village, Akaiwa Connty, Okayama Pref., where great many deathes have been taken place by infectious hepatitis; results were as follows: 1. 127 persons received the examination; it has covered 94.1% of the entire people. 2. Those who have had jaundice previously were enumerated as 5 cases; as it was just the season when infectious hepatitis was in vogue in other parts of the Prefecture, though slight in degree, it was imagined that probably in the past there might have occurred a few sporadic cases. Among those, 3 were taken record of as new victims of disease, 3. In 6 cases, the patients complained of certain pain, each having some sort of liver disturbance more or less. 4. There were 24 cases in which liver enlargement could be detected; its rate, 18.9%, while splenomegaly been discovered in only one case. 5. Two women in pregnancy were recognized, one sickened case, the other inapparent infection case. 6. As for wide-range judgment taken after the examinaton, must-be-treated case, 5, must-be taken-care-of case 5. inapparent infection 60, 70 in total. percentage of contraction, 55.1%, adding 3 cases starting disease as well as 3 deaths; thus, great total, 76 cases; its rate, 57.1%. 7. Percentage of contraction has proved high in thirties and above 50. By sex, females superseded, but as to age, no definite conclusion could be established. 8. In case those patients exposed would be divided by respective family and investigated, it has been revealed thus: (a) with families which have used a well in common with the family in which death case or at least patient was found, Percentage of contraction has proved high and almost in like degree, since many were adviced to receive treatment, or, be taken care of. (b) Families which employed a well in common, were recognized to have proved about the same ratio in infection, containing not a few ought to be treated or taken care of, which suggests us an infection due to a well. (c) Among the group of families, whose relatives died of this disease, master of the house who had presented himasdlf over the funeral diet has been found to have taken infection alone

Epidemiology of Infectious Hepatitis 4th Chapter. On the Mass Examination Taken for Hieda Hamlet

Executing mass examination for Hieda hamlet, Kama village, Akaiwa county, Okayama pref., results were as follows: 1. Number of people who received the examination; 286 in total, which covers 97.2% of the entire population. 2. There were 12 cases among those examined who have had jaundice in the past; similar to Shakurenii hamlet case, it was also supposed to have experienced certain sporadic cases too, in the past, Among those, 5 cases were rendered to be recoroded, as patients to be included under this head. 3. Patients who complain of conscious pain, 7; they all have had more or less liver disturbances. 4. The liver enlargement has been detected in 62 cases, which amounts to 22.3%, a figure that supersedes that in Shakurenji; splenomegaly was discovered only in 4 cases. 5. No effect has been seen either on pregnancy or delivery. 6. Final decision after the examination; must-be-treated case, 17; must-de-taken-care-of case 23; inapparent infection, 87; total, 127. percentage of contraction, 45.7%. To this, adding 2 mortal cases, attained total 129 cases, which proved 46.3%. 7. Percentage of contraction has proved high with people whose age was above 31; mostly in male, proving an antipodinous contrary to that happened in Shakurenji hamlet. 8. In case those patients exposed would be divided by respective family and investigated, it has been revealed thus. (a) The infection, though differs in degree, was thought sure to permiate all over the place. (b) Among relatives who had chance to take diet with the families which bore mortal cases, percentage of contraction proved to be as high as those families, with many people who are in need of treatment or care-taking. Moreover, a new-comer who had taken the post in a same public residence after the death of the presecessor, has been known to have taken infection immediateelv after. (c) Families which used a well in common with a family certain member of which has been contaminated, gave rise to victims in almost the same rate, which, proved about the same ratio with infected ones who were employing their own well. (c) Among the families which used a well in common with a family which engendered latent hepatiis the infection rather proved higher than those family group which uses their own well. (e) Families using a well in common with other family no member of which has been infected, yielded no patient. (f) Therefore, in this infected area too the infection due to party-meal, or well has been supposed