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Worms are an infectious disease caused by parasites in the form of worms. According to data from the Papua Province Health Service in 2011, the number of worm cases was 528.8 per 1,000 population, while in the Jayapura City Health Service the number of worm cases in 2011 was 2.48 per 1,000 population. According to data from the Abe Pantai Community Health Center, the prevalence of worms in 2012 was 3.21 per 1,000 population. The prevalence in Hedam Community Health Center, Waena Community Health Center and Kotaraja Community Health Center in 2012 was 1.94 per 1,000 population, 1.25 per 1,000 population, 0.94 per 1,000 population, respectively. Vegetables that are eaten directly are at risk of being contaminated by various types of parasites during planting, harvesting and marketing and have the potential for transmission of infection to humans. This study aims to determine whether or not there is contamination with STH (Soil transmitted helminth) worm eggs contained in fresh vegetables from roadside tent stalls in Abepura District. The type of research used is descriptive research using a laboratory approach. The research sample was 20 samples of roadside tent stall traders in Abepura District taken using Random Sampling Technique. The method for examining worm eggs uses the Sedimentation method. The results of identification of worm eggs in fresh vegetables sold by roadside stall vendors in Abepura District showed that there was worm egg contamination found in 20 samples of fresh vegetables, with 8 samples contaminated or 40% and 12 samples or 60% not contaminated with worm eggs Soil transmitted helminth. The types of Soil Transmitted Helminth worm egg species found were Ascaris lumbricoides (35%), Trichuris trichiura (30%) and Hookworm (30%)

Flies are vectors for disease transmission, especially mechanically and through their vomit and feces. Items, especially food, are usually contaminated by human feces, rubbish, the saliva of sick people, scars from animal carcasses and other things that are covered in flies. Flies can throw feces on food so that the food becomes contaminated with fly eggs and larvae. Disruption of comfort, eyesore, itching of the skin, causing discomfort, decreased appetite. To determine the density and identification of flies in the Waiheru Perumnas market, Baguala District, Ambon City. Type of descriptive research that describes a condition based on observation and examination of the Ambon Environmental Health Engineering Center (BTKL) Laboratory. The aim of descriptive research is to describe the density and identification of flies in the Waiheru Perumnas market, Baguala District, Ambon City. Measuring the density of flies in the Waiheru Perumnas market, Baguala District, Ambon City is based on 3 points, 10 measurements at each point in the morning, at the first point (los fish) amounted to 87 flies, at point II (vegetable stall there were 55 flies and at point III (fruit stall) there were 45 flies. Identification of fly types resulted in 3 types of flies identified, namely Musca Domestica (house fly), Cliphora Sp (green flies) and Sarcophaga (meat flies). The density of flies in the Waiheru Perumnas market, Baguala District, Ambon City, based on the installation of fly grills based on the 10 highest points, was 187 flies and at the 5 highest points was 134 flies with 23 flies caught in the fly trap. From the results obtained, it can be seen that the density of flies is very high so it is necessary to deal with fly breeding sites and fly control measures.

. Soil Transmitted Helminth (STH) is a group of intestinal nematode worms that require soil for the maturation process so that there is a change from a non-infective stage to an infective stage. This study aims to find out whether in the coastal sand area of Sekupang District, Batam City, there are intestinal nematode eggs of the Soil Transmitted Helminth (STH) group. The method used in this study is a survey method by taking sand samples from 3 different beaches, namely Tanjung Pinggir beach, Dangas beach, and Marina beach, then the sample is examined, namely by soaking the sample with 15 ml of saturated NaCl for 30 minutes stirring until evenly distributed with a stirring rod then transferred the soaking water in a test tube. Deck glass is placed on top at the mouth of the tube for 60 minutes. Then the sample was observed under a microscope with a magnification of 10 to 40 then analyzed descriptively by making a picture systematically. The results showed that there were no intestinal nematode worm eggs of the STH group in the beach sand sample so that it could be concluded that the tannjung beach sand area of Sekupang District, Batam City was free from contamination of intestinal nematode worm eggs of the soil transmitted helmith (STH) group.

. Soil Transmitted Helminth (STH) is a group of intestinal nematode worms that require soil for the maturation process so that there is a change from a non-infective stage to an infective stage. This study aims to find out whether in the coastal sand area of Sekupang District, Batam City, there are intestinal nematode eggs of the Soil Transmitted Helminth (STH) group. The method used in this study is a survey method by taking sand samples from 3 different beaches, namely Tanjung Pinggir beach, Dangas beach, and Marina beach, then the sample is examined, namely by soaking the sample with 15 ml of saturated NaCl for 30 minutes stirring until evenly distributed with a stirring rod then transferred the soaking water in a test tube. Deck glass is placed on top at the mouth of the tube for 60 minutes. Then the sample was observed under a microscope with a magnification of 10 to 40 then analyzed descriptively by making a picture systematically. The results showed that there were no intestinal nematode worm eggs of the STH group in the beach sand sample so that it could be concluded that the tannjung beach sand area of Sekupang District, Batam City was free from contamination of intestinal nematode worm eggs of the soil transmitted helmith (STH) group.

Tilapia (Oreochromis niloticus) has a number of favorable characteristics, such as reproducing easily, rapid growth, resistance to sub-ideal environmental conditions, and survival in high salt water. The purpose of this study is to conduct a comprehensive literature review on the reproductive biology of tilapia in Indonesian waters. This research method is in the form of secondary data which is used as the main source in the descriptive approach of literature review studies. The results showed that male tilapia grew faster than female tilapia, and female tilapia required a greater amount of energy for the maturation of its eggs. Female tilapia has a higher gonad maturity index than male tilapia in Indonesian waters. Types of tilapia vary. With a size of ± 3 mm, the diameter of tilapia eggs is very diverse.