The implementation of Universal Precaution in hospitals is crucial to prevent the transmission of infectious diseases through blood and body fluids between patients and healthcare workers. This study aimed to evaluate the effectiveness of health promotion using leaflets in improving nurses' knowledge and skills regarding Universal Precaution for HIV/AIDS at Tere Margareth General Hospital Medan. The study employed a quasi-experimental design with a *Pre-Test and Post-Test with Non-Equivalent Control-Group Design* approach. The study population consisted of 36 nurses, all of whom were included as the sample using a saturated sampling technique. Data were analyzed using univariate, bivariate, and multivariate methods with a paired *t-test* at a 95% confidence level (P<0.05). The results showed that health promotion through leaflets significantly improved knowledge (sig. 0.004) and skills (sig. 0.000) of nurses regarding Universal Precaution for HIV/AIDS. It is recommended that nurses continue to enhance the implementation of Universal Precaution in hospital settings to optimize infection prevention. Education through leaflets can be an effective method to improve the understanding and skills of healthcare professionals. 

The fulfillment of balanced nutrition in breastfeeding mothers is very important for parents to understand because considering the age of toddlers is a golden period that will determine the development process in the future. The milk consumed by babies is not enough only in quantity but the quality of breast milk. The purpose of this activity is to increase maternal knowledge about nutrition for breastfeeding mothers. Service activities were carried out at the Matang Puntong Health Center in October 2022. This activity is carried out during the implementation of Posyandu and gathers mothers who breastfeed their babies. The activity begins with exploring first, providing information, gathering breastfeeding mothers, providing counseling, holding discussions and evaluating service activities. Activities have been carried out whose results increase maternal knowledge about breastfeeding maternal nutrition by using poster or brochure media. The hope is that health workers can strive for innovative methods to increase maternal knowledge.