Forum Index » General Lightweight Backpacking Discussion » POP QUIZ


Display Avatars Sort By:
Aaron Sorensen
(awsorensen) - MLife

Locale: South of Forester Pass
POP QUIZ on 10/31/2013 23:21:12 MDT Print View

Pop quiz.


What is the number 1 way (and how) does someone get Giardia
I will give 1 clue a day and only answer in if someone gets it right.
I'm sure people will reply with the correct answer by day 2 but the correct answer must contain the (HOW).


Clue #1

It's not from drinking contaminated water.

Clue #2

The more people that hike with you, the better the chance of getting it.

Clue #3

You don't get it from you, but yet in the end you do.

Clue #4

Yes, others give it to you by not washing after going. You then get it on you, but the #1 way of giving it to yourself is not by putting "your fingers" or food you touched in your mouth, but in your...


Quiz is done. Nobody got it right.

The #1 reason is from other people's fecal matter. The how was that it spreads from their hands/ fingers to yours and then you pick your nose.

Edited by awsorensen on 11/02/2013 18:10:37 MDT.

Franco Darioli
(Franco) - M

Locale: Melbourne
POP QUIZ on 11/01/2013 00:57:44 MDT Print View

Feces to mouth contamination

Ozzy McKinney
(PorcupinePhobia) - F

Locale: PNW
yup on 11/01/2013 02:13:51 MDT Print View

Yup, the old fecal/oral route would be my guess. I was just watching "Flip Flop Flippin" about the AT, and there is a scene where everyone is digging their hands in a communal trailmix bag... barf.

Kronos Master of Fate
(kthompson) - MLife

Locale: Behind the Redwood Curtain
Re: POP QUIZ on 11/01/2013 06:29:32 MDT Print View

Causes
By Mayo Clinic staff
Giardia parasites live in the intestines of people and animals. Before the microscopic parasites are passed in stool, they become encased within hard shells called cysts, which allows them to survive outside the intestines for months. Once inside a host, the cysts dissolve and the parasites are released.

Infection occurs when you accidentally ingest the parasites. This can occur by swallowing contaminated water, by eating contaminated food or through person-to-person contact.

Swallowing contaminated water
The most common way to become infected with giardia is after swallowing contaminated water.

Giardia parasites are found in lakes, ponds, rivers and streams worldwide, as well as in municipal water supplies, wells, cisterns, swimming pools, water parks and spas. Ground and surface water can become contaminated from agricultural runoff, wastewater discharge or animal feces. Children in diapers and people with diarrhea may accidentally contaminate pools and spas.

Eating contaminated food
Giardia parasites can be transmitted through food — either because food handlers with giardiasis don't wash their hands thoroughly or because raw produce is irrigated or washed with contaminated water. Because cooking food kills giardia, food is a less common source of infection than water is, especially in industrialized countries.

Person-to-person contact
You can contract giardiasis if your hands become contaminated with fecal matter — parents changing a child's diapers are especially at risk. So are child care workers and children in child care centers, where outbreaks are increasingly common. The giardia parasite can also spread through anal sex.

Edited by kthompson on 11/01/2013 06:30:24 MDT.

Buck Nelson
(Colter) - MLife

Locale: Alaska
Re: POP QUIZ on 11/01/2013 06:37:48 MDT Print View

What do you mean by "people?" Makes a big difference if the person is 2 years old in a day care center or a backpacker.

No one knows for sure the break-down of how people are getting giardiasis in the backcountry. There have been several studies showing a link between untreated water from lakes and streams and giardiasis. I don't know of any showing a DIRECT link between dirty backpacker hands and giardia, yet it undoubtedly happens.

Regardless, it's a false choice. Dirty water and dirty hands commonly make people sick.

And Ken Thompson, good for you for quoting the Mayo Clinic.

Edited by Colter on 11/01/2013 10:48:37 MDT.

Aaron Sorensen
(awsorensen) - MLife

Locale: South of Forester Pass
Re: Re: POP QUIZ on 11/01/2013 07:28:22 MDT Print View

Franco is not correct.

It is not the #1 way.

He also did not answer the "HOW" part.

Edited by awsorensen on 11/01/2013 08:53:41 MDT.

Dena Kelley
(EagleRiverDee) - M

Locale: Eagle River, Alaska
"POP QUIZ" on 11/01/2013 13:33:10 MDT Print View

This is why I don't let people touch my food with their hands. Way too many people go to the bathroom and don't clean their hands afterward. Frankly I'm surprised it's more of a problem on the trail than in town because all the time I see people come out of a bathroom without washing their hands.

Aaron Sorensen
(awsorensen) - MLife

Locale: South of Forester Pass
Re: "POP QUIZ" on 11/01/2013 14:25:14 MDT Print View

Still no "correct" answer.

Ian Destroyer of Forums
(IDBLOOM) - MLife

Locale: PNW
Re: Re: "POP QUIZ" on 11/01/2013 15:09:27 MDT Print View

Spontaneous poop fights?

Dave T
(DaveT) - F
Difficult giardia quiz... THIS is how you do it! on 11/01/2013 15:24:56 MDT Print View

...

Tommy Nelson
(snowfugger)

Locale: San Diego
Re: POP QUIZ on 11/01/2013 16:16:49 MDT Print View

Swimming at a local pool? Swallowing water infected with the parasite while swimming either at a lap pool or community pool?

Desert Dweller
(Drusilla)

Locale: Wild Wild West
Pop quiz on 11/01/2013 21:30:12 MDT Print View

Sharing food.

Franco Darioli
(Franco) - M

Locale: Melbourne
poop quiz on 11/01/2013 21:33:23 MDT Print View

"He also did not answer the "HOW" part."
Sorry, I forgot there is no APP for this as yet.
You have a crap , then wipe your bum and either don't wash your hands or don't wash them well enough.
Keep in mind that we here are all VERY clean, I am talking about others.
You then get that bag of peanuts out and proceed to eat them. Note that you will at some point touch your mouth with you hands (others (one)will touch...)
Now because you (one is) a nice guy , you share your peanuts and cysts with others.

Buck Nelson
(Colter) - MLife

Locale: Alaska
Re: "POP QUIZ" on 11/02/2013 05:51:49 MDT Print View

This is why I don't let people touch my food with their hands. Way too many people go to the bathroom and don't clean their hands afterward. Frankly I'm surprised it's more of a problem on the trail than in town because all the time I see people come out of a bathroom without washing their hands.

I think there is some real insight there. It has been statistically proven that backpackers are in a high risk group for getting giardia from untreated water.

EPA: Epidemiological studies have also reported an increased risk of giardiasis among visitors to the Colorado mountains and hikers, backpackers, and campers in other areas who drink untreated or inadequately treated water from lakes and streams The FDA, CDC and most other public health organizations make similar statements.

Giardia cysts are found in approximately 30% of water sources. VIABLE giardia cysts are rarely found in city water. Where should we expect to get sick from the water?

As far as I know, there has never been an epidemiological study specifically showing, with data, that most hiker giardiasis comes from unwashed hands. If so, I hope someone will link to it.

I would expect most cases of food-sharing caused giardiasis to occur in places where there are the most people with the dirtiest hands sharing food. Backpacking is where I tend to be around the least number of people, and where I'm the most reluctant to share food, and the only scientific study of it's kind showed that hiker hands were CLEANER at the end of their trip then when they started. http://www.adirondoc.com/publications/hand_contamination_2012.pdf

In the "real world" according to a recent MSU study only 5% of people washed their hands enough to kill infection and illness causing germs after using the bathroom.

Saying most cases of hiker giardiasis comes from unwashed hands is pure speculation. What is not speculation is that lack of handwashing and water treatment have been proven to sicken people in the city AND in the backcountry.

Aaron Sorensen
(awsorensen) - MLife

Locale: South of Forester Pass
Re: Re: "POP QUIZ" last clue on 11/02/2013 11:09:15 MDT Print View

Still no correct answer.
Should be a piece of cake now.

Stephen Barber
(grampa) - MLife

Locale: SoCal
re: giardia transmission on 11/02/2013 11:54:06 MDT Print View

Buck sez: "There have been several studies showing a link between untreated water from lakes and streams and giardiasis. I don't know of any showing a DIRECT link between dirty backpacker hands and giardia, yet it undoubtedly happens."

Further, in order to get giardia from your fellow hikers' hands, that hiker has to have giardia (or be wiping the bottom of someone who has giardia) in order to pass it on to you. Giardia is NOT just the trots from ingesting some random normal intestinal critters from your friend. It's a specific bacteria whose effects don't show up for around 10 days after ingestion. If your hiking friends don't have giardia, you can't get it from their dirty hands, unless they've been playing in infected p00p!

How many of your hiking friends have giardia?

Aaron Sorensen
(awsorensen) - MLife

Locale: South of Forester Pass
Re: re: giardia transmission on 11/02/2013 12:04:00 MDT Print View

Everyone has some stran of giardia in them.

You are just immuned to "your" stran.

Bob Gross
(--B.G.--) - F

Locale: Silicon Valley
Re: re: giardia transmission on 11/02/2013 12:46:31 MDT Print View

"It's a specific bacteria whose effects don't show up for around 10 days after ingestion."

Stephen, it is not bacteria at all.

Giardia lamblia is a cystic protozoan. That means it is a parasite of sorts.

--B.G.--

Buck Nelson
(Colter) - MLife

Locale: Alaska
About 2% of North Americans have giardiasis on 11/02/2013 13:01:30 MDT Print View

According to the CDC.

People might build some immunity to a certain strain(s) leaving other strains for which they might have none.

Facts matter.

Edited by Colter on 11/02/2013 13:02:17 MDT.

Roger Caffin
(rcaffin) - BPL Staff - MLife

Locale: Wollemi & Kosciusko NPs, Europe
POP QUIZ probably wrong on 11/02/2013 17:13:19 MDT Print View

I'm sorry, But I think I disagree with every 'clue' and claim in the quiz.
Specifically, hand-to-mouth and contaminated water are the dominant vectors. Contaminated food is likely secondary, and falls under the 'hand' class anyhow.

Cheers