           Trichinella cysts       Open pop-up dialog box          Close    Trichinella cysts   Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here.               Trichinella cysts       Open pop-up dialog box           Trichinella cysts       Open pop-up dialog box  Open pop-up dialog box       Close    Trichinella cysts   Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here.          Close    Trichinella cysts   Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here.        Close    Trichinella cysts   Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here.     Close    Close  Close Trichinella cysts   Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here.  Trichinella cysts After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here. After you eat roundworm (trichinella) larvae, they grow into adult worms in your small intestine. The adults then produce larvae that move through the bloodstream to muscle tissues, shown here. Signs and symptoms of trichinosis infection and how severe the infection is can vary. This depends on the number of larvae eaten in the infected meat. Possibly no signs or symptoms Mild cases of trichinosis — those with only a small number of parasites in your body — may cause no signs or symptoms. Symptoms can develop with moderate or heavy infestation ⸺ a large number of parasites in your body. These symptoms sometimes get worse as the roundworm (trichinella) larvae travel through your body. Initial signs and symptoms You swallow roundworm (trichinella) larvae in tiny sacks (cysts) containing the parasite. Your digestive juices dissolve the cysts, releasing the larvae into your body. The larvae then enter the wall of your small intestine, where they grow into adult worms and mate. Digestive symptoms can begin 1 to 2 days after infection. At this stage, you may experience:  Diarrhea Stomach (abdominal) pain Severe tiredness and weakness (fatigue) Nausea and vomiting  Later signs and symptoms About a week after infection, the adult female worms produce larvae. The larvae go through the wall of your intestine and enter your bloodstream, They travel around the body and bury themselves in muscle tissue. Here, each larva coils up and forms a cyst around itself. The larvae can live for months to years inside the muscle tissue. Symptoms caused by muscle tissue invasion usually start 2 to 8 weeks after infection and include:  High fever and chills Muscle pain and tenderness Aching joints Swelling of the eyelids or face Weakness Headache Sensitivity to light Pink eye (conjunctivitis) Itchy, irritated skin  With a large number of parasites, muscle pain and weakness can be severe. This can limit moving, breathing and speaking. Symptoms last for several months. But symptoms generally lessen when the larvae form cysts. Even after the infection is gone, fatigue, mild pain, weakness and diarrhea may last for months or years.
           trichinella cysts       open pop-up dialog box          close    trichinella cysts   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here                trichinella cysts       open pop-up dialog box           trichinella cysts       open pop-up dialog box  open pop-up dialog box       close    trichinella cysts   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here           close    trichinella cysts   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here         close    trichinella cysts   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here      close    close  close trichinella cysts   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here   trichinella cysts eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here  eat roundworm (trichinella) larvae  grow adult worms small intestine  adults produce larvae move bloodstream muscle tissues  shown here  signs symptoms trichinosis infection severe infection can vary  depends number larvae eaten infected meat  possibly signs symptoms mild cases trichinosis — only small number parasites body — may cause signs symptoms  symptoms can develop moderate heavy infestation ⸺ large number parasites body  symptoms worse roundworm (trichinella) larvae travel body  initial signs symptoms swallow roundworm (trichinella) larvae tiny sacks (cysts) containing parasite  digestive juices dissolve cysts  releasing larvae body  larvae enter wall small intestine  grow adult worms mate  digestive symptoms can begin 1 2 days infection  stage  may experience:  diarrhea stomach (abdominal) pain severe tiredness weakness (fatigue) nausea vomiting  later signs symptoms week infection  adult female worms produce larvae  larvae wall intestine enter bloodstream  travel body bury muscle tissue  here  larva coils forms cyst itself  larvae can live months years inside muscle tissue  symptoms caused muscle tissue invasion start 2 8 weeks infection include:  high fever chills muscle pain tenderness aching joints swelling eyelids face weakness headache sensitivity light pink eye (conjunctivitis) itchy  irritated skin  large number parasites  muscle pain weakness can severe  can limit moving  breathing speaking  symptoms last months  symptoms generally lessen larvae form cysts  infection gone  fatigue  mild pain  weakness diarrhea may last months years
trichinosis