Universal childhood hepatitis B vaccination was introduced in Indonesia in 1997; by 2008, coverage was estimated to be 78%. This study aimed to investigate the serologic status and virologic characteristics of hepatitis B virus (HBV) among the children in East Java. A total of 229 healthy children born during 1994–1999 were enrolled in this study. Overall, 3.1% were positive for hepatitis B surface antigen (HBsAg) and 23.6% were positive for antibody to HBsAg (anti-HBs). HBV DNA was detected in 5 of 222 HBsAg-negative carriers, which were suggested to be cases of occult HBV infection. A single amino substitution (T126I) in the S region was frequently found. HBV infection remains endemic, and the prevalence of anti-HBs remains insufficient among children in East Java, Indonesia.

The purpose of this study was to investigate the prevalence of hepatitis E virus (HEV) infection in swine and humans in different environments in Java and Bali, Indonesia. The prevalence of anti-HEV antibodies in people over 20 years old living in communities in Bali was significantly higher than that in Java. While 68.8% and 90.0% of swine in Bali were anti-HEV positive at 1 and 2 months of age, respectively, swine in Java were at significantly lower risk of HEV infection by the age of 2 months. Our present data suggest that substantial differences in swine-breeding conditions and human living environments affect the rate of HEV infection in humans and swine.

Dengue Hemorrhagic Fever (DHF) is a disease caused by dengue virus. DHF is mediated by the mosquito vector, the Aedes mosquito. The proliferation of dengue vector is influenced by many factors, one of which is climate factors. DHF is one of the main public health problems in Indonesia. Cases of dengue were first discovered in 1968 in the city of Jakarta and Surabaya. Currently Surabaya is one of the dengue endemic areas in Indonesia. . The case of DHF in the city of Surabaya can be said to be still quite high compared with another city in Indonesia, although there is a decrease in the number from year to year. When examined, many factors influence the high number of dengue cases in Surabaya, one of which is climate factor. Climate factors play a role in the proliferation of DHF vectors. Therefore, this study aims to examine for 10 years, namely in 2007 - 2017 whether there is a correlation between climate factors with dengue cases in the city of Surabaya., which in this study the climate factors used are rainfall, average temperature, and average air humidity. This research uses an analytical method namely Spearman on the SPSS software version 20. The results obtained that the case of DHF in the city of Surabaya has no relationship with climatic factors such as rainfall and average temperature with a significance value of the relationship p> 0.05. While the climate factor that has a relationship with DHF cases in Surabaya City is air humidity with a significance value of p <0.05 and has a positive relationship with the value of r = + 0.190. It can be concluded that not all climate factors have a relationship with the DHF case in Surabaya in 2007 - 2017, which has a relationship with the DHF case is air humidity.

Introduction: HIV AIDS patients who have a CD4 count < 200 cells/uL often complain of respiratory symptoms (Wallace, 1993). The complaint was shortness of breath (62%). Opportunistic infections (IO) in HIV patients are also brought on by a decreased CD4 count of 200 cells/uL (Peters, 2007). HIV/AIDS patients with CD4 < 200 cells/uL have a risk of death of 10.399 (Kusumaadhi, 2021). This study aims to determine the association between CD4 cell count with mortality in HIV patients with shortness of breath at Cendana, Dr. Soetomo General Academic Hospital Surabaya, during the period of January–December 2020.Methods: This study used a cross-sectional retrospective design. The population in this study were patients diagnosed with HIV at Cendana, Dr. Soetomo General Academic Hospital, using a total sampling technique. The variables studied were the CD4 counts as the independent variable, and the mortality of HIV patients with dyspnea as the dependent variable. The sample in this study must meet the inclusion criteria, namely, the sample must have a history of CD4 counts in their medical record in the last 2 to 3 months while in Cendana, Dr. Soetomo General Academic Hospital. Secondary data from medical record data in Cendana, Dr. Soetomo General Academic Hospital, was used for the research from January to December 2020. Results: A total of 128 HIV patients with dyspnea and a history of CD4 counts in the previous 3 to 4 months were included in the study: 79 (61.7%) males and 49 (38.3%) females. The most common age groups were 31–40 years (33.6%), 20–30 years (32.0%), 41–50 years (23.4%), and > 60 years (2.4%), with no patients under the age of 20. The distribution of the most opportunistic infections were: pneumocystis pneumonia (n = 62), tuberculosis (n = 49), and bacterial pneumonia (n = 17). Patients lived (n = 79) and died (n = 49) in total.Conclusion: There was no significant association between CD4 count and mortality in HIV patients with dyspnea (p-value 0.084 > 0.05).