Background: Acute Respiratory Infection (ARI) is still one of the health problems in developed and developing countries including Indonesia. ARI is the most common disease in outpatients in North Sumatra, especially in Medan. This study aims to find out about the factors that influence ARI in toddlers in Simalingkar Health Center Medan, including nutritional status, birth weight, history of immunization, exclusive breastfeeding, and parental smoking status. Subjects and Method: This was a cross sectional study. The sample used was all toddlers who came to the Simalingkar health center, amounting to 100 people. Data collection was carried out using interviews and analysis was carried out using bivariate and multivariate with multiple logistic regression. Results:The results showed that there was a significant influence between nutritional status, exclusive breastfeeding and parental smoking status with the incidence of ARI in infants. Conclusion:The results showed that there was a significant influence between nutritional status, exclusive breastfeeding and parental smoking status with the incidence of ARI in infants.

A research was conducted to 69 female students from a junior high school (SLtP) Negeri I Curug, tangerang aged 12–14 yearsto obtain percentages of anemia and iron deficiency in female adolescents. Anemia was found on 10.2% of the students, with 4.3%of normocytic normochromic anemia and 5.8% of microcytic hypochromic anemia. Microcytic hypochromic erythrocytes was foundon 21.7% of the subjects which consist of 2.9% iron deficiency anemia, 1.4% phase 2 iron deficiency (latent) with possibility ofhemoglobinopathy, and 2.9% phase 1 iron deficiency (pre-latent) with possibility of hemoglobinopathy. Anemia without iron deficiencywith possibility of chronic diseases and/or hemoglobinopathy was 2.9%, and without anemia nor iron deficiency but with possibility ofhemoglobinopathy was 11.6%. Iron deficiency was found among 26.1% of subjects which consist of 11.6% pre-latent iron deficiency,8.7% latent iron deficiency, and 5.8% iron deficiency anemia with 2.9% and 2.9% were normocytic normochromic anemia andmicrocytic hypochromic anemia, respectively.

Dengue infection is a public health problem in Indonesia in general and North Sumatra in particular, where the cases tend to increase and spread more widely and have the potential to cause outbreaks. Platelets and hematocrit are important parameters in the management of patients with dengue infection. To determine the relationship between platelets counts and hematocrit with the severity of dengue infection, a literature review was conducted by comparing several related journals. The research method used was a Literature Review, using secondary data. Data were collected using documentation techniques. The research journals used were five journals with inclusion criteria for the publicaton date of the last five years, the language used was Indonesian, with the research subjects of patients with a diagnosis of dengue hemorrhagic fever and full text publication. There is a significant relationship between the plateled count and the hemtocrit value with the severity of the dengue infection patients, but there is dengue hemorrhagic fever patients.

Community Service (PkM) is carried out by the Faculty of Medicine Universitas Methodist Indonesia by providing counselling the effect of Narcotics and Drug abuse. PkM was held on 8-11 June 2022 at Lumban Pea Timur, Balige,Toba District, North Sumatera. The method used is to provide counselling/lectures and provide motivation, then followed by question and answer to obtain results and solutions as a form of solving problems and obstacles faced. The results of PkM with counselling are very effective considering that there are still many people who do not get information about Narcotics and Drug abuse. With this counselling, the public becomes aware of the Narcotics and Drugs abuse problem. Thus, it is hoped that the people of Lumban Pea Timur will aware and know how to prevent their community from Narcotics and drug abuse.