Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

  • Announcements

    • Rick

      Members Only Fluid Forum View   08/08/2017

      Fluid forum view allows members only to get right to the meat of this community; the topics. You can toggle between your preferred forum view just below to the left on the main forum entrance. You will see three icons. Try them out and see what you prefer.   Fluid view allows you, if you are a signed up member, to see the newest topic posts in either all forums (select none or all) or in just your favorite forums (select the ones you want to see when you come to Fishing Minnesota). It keeps and in real time with respect to Topic posts and lets YOU SELECT YOUR FAVORITE FORUMS. It can make things fun and easy. This is especially true for less experienced visitors raised on social media. If you, as a members want more specific topics, you can even select a single forum to view. Let us take a look at fluid view in action. We will then break it down and explain how it works in more detail.   The video shows the topic list and the forum filter box. As you can see, it is easy to change the topic list by changing the selected forums. This view replaces the traditional list of categories and forums.   Of course, members only can change the view to better suit your way of browsing.   You will notice a “grid” option. We have moved the grid forum theme setting into the main forum settings. This makes it an option for members only to choose. This screenshot also shows the removal of the forum breadcrumb in fluid view mode. Fluid view remembers your last forum selection so you don’t lose your place when you go back to the listing. The benefit of this feature is easy to see. It removes a potential barrier of entry for members only. It puts the spotlight on topics themselves, and not the hierarchical forum structure. You as a member will enjoy viewing many forums at once and switching between them without leaving the page. We hope that fluid view, the new functionality is an asset that you enjoy .

Recommended Posts

Scott M    3
Scott M

At a family gathering we were discussing the story of a group of fishermen who went up into the boundary waters, caught some walleye, and had freshwater raw sushi shore lunch out of their catch. To make a long story short, 6 months later one of the party had a routine medical exam, found out he had like 6 huge tapeworms. He contacts his buddies and they all have tapeworms too. I commented that I found this story hard to believe, but my relative claims it was in the Star Tribune or the New York Times or something a year or two ago. Anyone hear of this or have a comment? I always thought parasites were pretty host-specific. Considering what a huge difference in environments and diets humans and fish have, I just couldn't believe it but I didn't want to overdebate the issue and look like an a-hole. I will post on the Walleye board too.

Share this post


Link to post
Share on other sites
bwtrout    0
bwtrout

December 19, 2004

--------------------------------------------------------------------------------

Tapeworm diseases

Definition

Tapeworms are a group of parasitic worms that live in the intestinal tracts of some animals. Several different species of tapeworms can infect humans. Tapeworm disease or cestodiasis occurs most commonly after eating raw or undercooked meat or fish that contains the immature form of the tapeworm.

Description

Tapeworm infections pose a serious public health problem in many less developed countries due to poor sanitation conditions. The disease is most common where livestock, such as cattle and pigs, are raised in areas where human feces are not disposed of in a sanitary manner. Another common source of human tapeworms are certain species of freshwater fish. Tapeworm infections tend to occur more frequently in areas of the world where the people regularly eat raw or undercooked beef, pork, or fish. Persons of all ages and both sexes are susceptible to tapeworm infection, but children are generally not exposed until they are old enough to begin eating meat or fish.

Tapeworm is less common in industrialized regions of the world, but travel to areas where tapeworm infections are more common and immigration of people from these areas serve as new sources of the parasite. Infected persons are often unaware of the presence of adult tapeworms in their intestinal tract, as they may have no obvious symptoms of infection. Some tapeworms can live in an infected person for over 10 years if diagnosis is not made and treatment is not administered.

In addition to the typical infection caused by eating undercooked meat or fish, people may also be directly infected by ingesting tapeworm eggs shed by the adult worm. This type of tapeworm infection can lead to a condition referred to as cysticercosis, where the larvae continue to develop within tissues other than the intestinal tract. One of the most serious forms of this disease occurs when the tapeworm larvae infect the central nervous system, a disease referred to as neurocysticercosis. In contrast to a typical tapeworm infection, which may not be associated with symptoms, neurocysticercosis is a serious condition that may cause seizures and is potentially life-threatening.

Causes and symptoms

Several species of tapeworm can infect people. The two most common species are the pork tapeworm (Taenia solium) and the beef tapeworm (Taeniasaginata). Improperly treated human sewage may be used to fertilize pastures or crops. Pigs or cattle become infected by grazing in contaminated pastures or drinking water contaminated with tapeworm eggs from human feces. The pea-sized larvae of these tapeworms are deposited in certain tissues of the body of infected pigs and cattle, including the muscles. The infection is then transmitted to people when raw or undercooked meat containing tapeworm larvae is consumed. The immature tapeworm develops into the adult form in the human intestine and may remain there for many years if not identified and treated.

The Taenia tapeworms attach to the intestinal walls but only cause mild inflammation at the site of attachment. As a result, most tapeworm carriers show no symptoms (asymptomatic) and usually only become aware of the infection after noticing tapeworm segments in their feces. Segments of the beef tapeworm may spontaneously pass through the anus causing a noticeable sensation. Mild gastrointestinal symptoms, such as nausea or abdominal pain, can occur in infected individuals. In rare cases where the tapeworm segments migrate into the appendix, pancreas, or bile duct, there may be a sudden onset of severe abdominal discomfort.

Cysticercosis is a potentially serious complication of Taenia solium infection in which the larvae develop outside the intestinal tract. This type of infection is less common and occurs following accidental consumption of tapeworm eggs released from the adult worm. These eggs initially are localized in the anal area, but they may also contaminate the fingers or other parts of the body. Infection can occur in the person harboring the adult tapeworm or in other people with whom that individual comes in contact. The tapeworm larvae may develop in various tissues throughout the body. The most serious clinical problems occur when the larvae develop in the central nervous system (neurocysticercosis), potentially causing seizures and other neurological problems. An important aspect of this type of infection is that poor hygiene on the part of the individuals harboring an adult tapeworm can lead to an infection in an individual that may never consume meat. This is a particular problem if infected individuals are employed as food handlers.

Another important tapeworm that may infect people is the fish tapeworm (Diphyllobothrium latum). This is a frequent human intestinal parasite in many areas where raw freshwater fish is consumed. Human infection with the fish tapeworm is referred to as diphyllobothriasis. Feces from infected hosts or raw sewage contaminates a fresh water source. Tapeworm larvae are initially ingested by freshwater crustaceans and then are eaten by fish. Human infection occurs when a person consumes raw fish contaminated with the tapeworm larvae. Adult tapeworms then develop in the human intestinal tract.

Most infections with the fish tapeworm are not associated with symptoms. The tapeworm causes little damage to the lining of the intestine. Infected individuals may report diarrhea, fatigue, weakness, or sensation of hunger more commonly than uninfected individuals. One problem unique to this tapeworm is that it may compete with the host for absorption of vitamin B12 from the small intestine, causing the person to become deficient in this vitamin and leading to a condition called pernicious anemia.

Two smaller species of tapeworms may also infect people. The dwarf tapeworm (Hymenolepis nana) is a common infection throughout the world and that can be passed from one person to another. Transmission is usually the result of inadvertent ingestion of tapeworm eggs from feces eliminated by infected individuals. As a result, infection with this tapeworm is encountered most frequently in children, the developmentally disabled, and psychiatric patient populations. Abdominal pain that is not localized to any particular area is the most common complaint. Patients may experience loose bowel movements or diarrhea with mucus, but bloody diarrhea is rare.

Another small tapeworm capable of infecting people is the rodent tapeworm (Hymenolepis diminuta). Rats, mice, and other rodents are the usual hosts for the adult tapeworm (definitive host), but humans can become infected following accidental consumption of insects containing tapeworm larvae. Meal worms or grain beetles that infest cereal, flour, or dried fruit are the most likely source of infection. Most human infections are not associated with symptoms, although some individuals report headaches, anorexia, nausea, and diarrhea.

Diagnosis

Identification of tapeworm segments or eggs in a stool sample is necessary for diagnosis of an adult tapeworm infection. In many cases, a tentative diagnosis may be made on the basis of a patient's description of short chains of tapeworm segments in their stool. Further evaluation is recommended to determine the actual species involved since infection with Taenia solium is potentially more serious due to the added risk of cysticercosis. Whenever possible, tapeworm segments should be carefully collected in water or salt solutions, using strict precautions to avoid contamination. Stool examination should be performed in a laboratory having experience in the diagnosis of intestinal parasites. It is recommended that at least three stool samples be collected on alternate days to increase the likelihood of being able to make an accurate diagnosis.

Although the general appearance of tapeworm segments from the two Taenia species is quite similar, trained laboratory personnel can detect distinct differences between the beef and pork tapeworms when samples are examined under a microscope. Tapeworm segments and eggs from the fish tapeworm and the dwarf tapeworm have characteristic appearances that allow accurate differentiation from the Taenia species of worms. Other diagnostic procedures may be necessary when cysticercosis is suspected. Blood samples from an infected individual are collected to look for the presence of antibodies against the tapeworm larvae. In cases where infection of the central nervous system is present, advanced imaging tests, such as computed tomography scans and magnetic resonance imaging (MRI), may be necessary to determine the exact location of the tapeworm larvae within the body.

Treatment

Effective treatment of tapeworm infections involves administering compounds that are toxic to the adult worm. Many of the early treatments were also somewhat toxic to the patient, so treatment was often quite an ordeal. Newer medications are much more easily tolerated and are highly effective in eliminating the parasite from the body.

One treatment that has been in use since the early 1960s is niclosamide (Niclocide). This drug is poorly absorbed from the digestive tract and rapidly kills tapeworms upon exposure. It has been shown to be effective against Taenia species and the fish tapeworm, but treatment of the dwarf tapeworm (Hymenolepis nana) may require a more prolonged treatment schedule. Side effects reported with niclosamide are infrequent and typically mild. When present, side effects may include nausea, abdominal discomfort, vomiting, diarrhea, light-headedness, and skin rash. This medication should be taken in the morning on an empty stomach. The tablets are chewed thoroughly and swallowed with water. For young children, the tablets may be pulverized and mixed with water. Patients are allowed to eat two hours after treatment. Recommended dosage is 2 grams for adults and about half this for children.

Another oral medication that has been shown to be 95% effective in the treatment of tapeworm infections associated with both Taenia and Diphyllobothrium latum species is praziquantel (Biltricide). Side effects reported for praziquantel are mild and appear to be short-lived. They include nausea, abdominal pain, itching, sore joints, and muscle pain.

It is recommended that follow-up stool samples be examined at one month and three months after treatment has been completed. Treatment can be considered successful if no eggs are present in several stool samples. It should be noted that the tapeworm medications do not kill the tapeworm eggs when they kill the adult worm, so the potential for infection with eggs still exists as the dead worm segments are passed. Proper personal hygiene in individuals receiving treatment will greatly reduce this potential.

Cases of neurocysticercosis, where larvae have developed in the central nervous system, may also be treated with praziquantel or albendazole. If treated promptly, damage to the central nervous system will be minimized.

Prognosis

When confined to the intestinal tract, tapeworms cause minimal damage to their human host. Once the diagnosis of an intestinal tapeworm infection has been made, prognosis following treatment with niclosamide or praziquantel is good. The worms can be eliminated from the intestines with oral treatment, and there are usually no residual side effects. Serious problems from tapeworm infections occur when tapeworm eggs are consumed and the larvae localize in tissues outside the digestive tract (cysticercosis). Prompt diagnosis and treatment of this condition is necessary to prevent permanent damage to the central nervous system and other internal organs. Untreated cases of cysticercosis have the rare potential to be life-threatening.

Prevention

The best way to prevent infection with tapeworms is to eliminate the exposure of livestock to the tapeworm eggs by properly disposing of human feces. The next best strategy is to thoroughly cook or freeze all meat and fish before it is eaten to prevent consumption of live tapeworm larvae in infected samples. Larval cysts in pork and beef are killed by moderate temperatures of 150°F (65°C) or if frozen for at least 12 hours. Proper cooking of freshwater fish could also eliminate the possibility of human infection with the fish tapeworm. Freezing fresh fish for 24 hours will also kill the larval form.

Terms:

Cestodiasis

Parasitic infection caused by the presence of adult tapeworms of the class Cestoda within the intestinal tract. Infection is caused by accidental consumption of tapeworm larvae.

Cysticercosis

Parasitic infection caused by the presence of immature tapeworm larvae (cysticerci) that have developed outside the intestinal tract. Infection is caused by accidental consumption of tapeworm eggs.

Diphyllobothriasis

Parasitic infection caused by the presence of tapeworms from the Diphyllobothrium species, such as the fish tapeworm (Diphyllobothrium latum).

Hymenolepiasis

Parasitic infection caused by the presence of tapeworms from the Hymenolepis species, such as the dwarf tapeworm (Hymenolepis nana) or the rodent tapeworm (Hymenolepis diminuta).

Neurocysticercosis

Parasitic infection caused by the presence of immature tapeworm larvae within the central nervous system.

Pernicious anemia

Type of anemia caused by a deficiency in vitamin B12.

Taeniasis

Parasitic infection caused by the presence of tapeworms from the Taenia species, such as the pork tapeworm (Taenia solium) or the beef tapeworm (Taenia saginata).

Resources:

PERIODICALS

Despommier, Dickson D. "Tapeworm Infection: The Long and the Short of It." New England Journal of Medicine, 327 (September 3, 1992): 727-728.

Pearson, Richard D., and Erik L. Hewlett. "Niclosamide Therapy for Tapeworm Infections." Annals of Internal Medicine, 102 (April 1985): 550-551.

Schantz, Peter M. "Tapeworms (Cestodiasis)." Gastroenterology Clinics of North America, 25 (September 1996): 637-653.

Schantz, Peter M., et al. "Neurocysticercosis in an Orthodox Jewish Community in New York City." New England Journal of Medicine, 327 (September 3, 1992): 692-695.

Tanowitz, Herbert B., Louis M. Weiss and Murray Wittner. "Diagnosis and Treatment of Intestinal Helminths: Common Intestinal Cestodes." The Gastroenterologist, 1 (December 1993): 265-273.

--------------------------------------------------------------------------------

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

This health encyclopedia is made possible by the Dr. Joseph F. Smith Trust Fund. Dr. Smith was a surgeon who resided in Wausau from 1908 to 1952. In addition to his surgical practice, Dr. Smith possessed a strong commitment to community service and medical education. The agreement which created the Dr. Joseph F. Smith Medical library was signed in July of 1948.

Copyright 1999-2001. The Thomson Corporation. All rights reserved. MyDiseaseDex is a trademark of Micromedex, Inc.

Medical Library, 333 Pine Ridge Blvd. Wausau, WI 54401, Phone: 715-847-2184, Fax, 715-847-2183

Share this post


Link to post
Share on other sites
Northlander    72
Northlander

Thanks BW thats good info to have. Thats why I cook all my food and uasually well at that.

Share this post


Link to post
Share on other sites
gunflint    0
gunflint

Eating raw walleye? What the (heck) did they expect? I think Ted Nugent said it best. " You Should'nt discourage stupid people from doing stupid things, that's how you can tell who they are."

Share this post


Link to post
Share on other sites
upnorth    2
upnorth

That used to be natural the natural selection process.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  



  • Posts

    • SkunkedAgain
      Jeez no. I can barely remember the netting discussion, let alone which side that I was arguing! Yup, you can see us cruising past quite often probably intent on satisfying the little one's quest for some ice cream at Moosebirds. She loves Sue and Ron. I'll definitely wave or stop by if I see you. I'll be up the next two weekends.
    • Wakemup
      How do you guys like to fish the west end as we transition into September and early fall? My next planned time at the cabin will be Labor day, I'm sure it'll be plenty busy on the lake but hoping to find a few quiet spots in the mornings and evenings to do some walleye fishing.
    • leech~~
      Plus+1  The size seems to drop off late in the year. Last year bait shops I went to were selling Large as Jumbos and small as large!
    • RuddyDuck
      Reminder, meeting tonight at 7:00pm in Annandale and written comment period runs til August 28th. The email addresses for comment are on pages 18-19. Comment now or the days of fishing your favorite lake anytime you want, will be over! I’m sure this is coming to a county near you if this goes thru out here.
    • gimruis
      Not uncommon at all for this time of year.  I used to try and find some regularly around Labor Day and always ran into problems.  I think its just the nature of the bait business.
    • BringAnExtension
      Does anyone know where I can get some jumbo leeches between the Twin Cities and Mille Lacs?  I would even settle for large.  There seems to be a shortage of supply. Thanks!
    • proguide
      Our prayers were answered from the south with some river flow. For now the river is back to easier and safer boating so we can get around.
        The catfishing has held steady, same as the past two weeks. The fish have moved to the shallow off current sides of the river since the nights have recently become cooler.  Sits have become longer to 25-35 minutes per spot to allow the fish to find the bait.  Mid-Day don't be afraid to find some current or move back to the middle to see if the fish have moved out to feed.
        Bait has been frozen suckers and frogs.  All other baits just don't seem to have the same effectiveness.
        We are entering into some transitions to fall and things will be changing over the next week or two.  The new flow should get the fish moving a bit more and that fall feed should ramp up over the next couple weeks.
    • PRO-V
      Also check for water in the fuel filter. At higher rpms water droplets travel to carbs and causes poor combustion. Happened to me some years ago. Had to drain water out of tank.
    • CigarGuy
      Skunked, It was nice meeting you.  I've seen you,  your wife and little one a few times, but you never waved-thought you might be mad at me after we had a little debate on netting.  Sounds like were good!  Stop by if you see me on the dock.  That was my wife and sister in-law assembling the bench. That pinch area on the river is tight and some folks tend to fly right thru.  Also, people fishing on that dock in the pinch down area in the spring, don't like to reel in their bobber when you try to navigate through the boats in the spring.  I used the fish the St Louis River a lot and fellow fisherman were terrible flying by you.  I too follow the no-wake policy when going through tight areas.
    • delcecchi
      Yep, done for the year.  Not much for heat or insulation in the cabin.  It's a real, honest to goodness cabin.   So, as of Thursday, adios.  Until next year, etc.