it is true that being exposed to a lot of different things (especially as a kid) makes your immune system stronger. and there's what's called the Hygene Hypothesis, which has pretty good evidence behind it, which is that about 1 generation after a society gets rid of it's internal parasites (mostly intestinal worms), the rate of allergies and autoimmune diseases spikes. They're even testing to see if intentionally giving people harmless worms can cure some of those diseases (pretty good results for crohn's disease and ulcerative colitis). Also for each germ you're exposed to, you end up adding it to your antibody library, so that if you encounter the same germ again later, your body has an easier time fighting it off, and you get less sick. So why did your friends get food poisoning and you didn't? could be a lot of things. might have been luck, and they ate more of whatever the bug was than you did. (like if it was BT food poisoning, if they ate more rice than you did, they'd have worse symptoms). Or you may have encountered that particular strain of salmonella or e.coli before. Or if it was norovirus it may have been on some tiny thing they ate that you didn't, or on the rim of a glass and you were the only one to drink with a straw. There's also the possibility that your gut flora is just particularly dense, and there was no place for the bacteria you ate to find a spot. It also may be due to genetics... for instance, e. coli 0157 produces a toxin that kills human intestinal cells, but is harmless to cattle. so if you don't have the receptor for that toxin, you wouldn't get sick (though if THAT's what your friends got, they'd probably be in the hospital. that stuff is nasty!)
Source: microbiology student and infectious disease nerd
yay! a fellow microbio/disease nerd!All of this. I love to see when people know what they are talking about when it's a subject that I enjoy!
yay! a fellow microbio/disease nerd!
Have you ever listened to the This Week in Virology/Parasitology/Microbiology podcasts? or the Puscast?
(also I'm terribly excited that I get to stick GFP into e. coli in class on Tuesday)
I can't say I watch them regularly, but I have seen some and found them to be enjoyable.
Out of curiosity what are you tagging with GFP?
You have e coli in your intestines. It's only dangerous in your stomach. So, when workers are out in the field, they don't always have access to toilets. So they crap in the field. Yeah. Wash it if it's from walmart or any other supermarket. But if it's from your grandmother's garden, you're okay.