Do you see the tiongs and vietcongs or the shitskins die en masse eating at roadsides? The more you protect the more vulnerable your immune system.
Actually many people in the world do die from poor sanitation. Diseases like cholera and salmonella, dysentry
Many do die. It is just that in those countries it is so common it is not news worthy. They would be so thankful if they could have an increased level of sanitation.
This whole movement to talk about not being "too clean" to ensure a healthy immune system has been taken to the wrong extremes by ignorant lay people.
When we talk about allowing good bacteria to co exist with us and serve a symbiotic relationship it has to be a balance.
Instances where it is said it is bad include excessive use of antibacterial soaps and hand sanitizers do kill off too many good bacteria on skin and is associated with skin diseases eg eczema dry irritated skin.
Studies have shown that kids growing up in sterile environments tend to have a higher risk of developing allergies.
Kids that grow up with pets like dogs tend to be more resilent. The theory is having exposure to some of these good bacteria that do not cause harm.
It is different when you are referring to bacteria that are well known to cause harm. No amount of good will come out of that.
So it is folly to suggest that in food centres a substandard for cleanliness should be acceptable. It is taking the theories and applying it at the wrong extreme.
Hepatitis A. Salmonella Typhii. Cholera. Campylobacter. Norwalk virus. E.coli
Trust me you dont want any of those to make your immune system "less vulnerable" it is total rubbish to suggest that.
It is totally the case of people having grown up with good sanitation and never experienced the problems with poor sanitation that they take it for granted and even downplay what they have never experienced before.
Having said that we live in a day and age where everyone's opinion is correct and no one is wrong.
Hence all the above is just my opinion which I have formulated from knowledge i have gained in my training and work. And you have every right to disagree.
Cheers.