I've answered the following question:
Sub-questions are:
- I've heard that once a person catches a cold, his whole immune system becomes weak and is affected
- In what way does having a cold influence the immune system?
- If it does weaken it, how can one keep the immune system strong while the person is infected with a cold?
The 1st one is answered by Cause section:
The common cold is a mild viral infection of the upper respiratory tract (nose, throat, sinuses and upper airways, see below) and over 200 different viral types are associated with colds.
Obviously it address that not whole immune system is affected, but only the upper respiratory tract is infected.
The 2nd question is addressed in Progression section:
It usually beings with fatigue, a feeling of being chilled, sneezing and a headache. Further symptoms include coughing, sore throat, blocked nose followed by a runny nose, sneezing, cough, a sore throat, and fever which usually resolve in seven to ten days, with some symptoms lasting up to three weeks. The symptoms are believed to be primarily related to the immune response to the virus.
For example when viral infection causes nasal obstruction, the body releasing histamine which increases blood flow to the nose and causes nasal tissue to swell.
The 3rd question is addressed in Prevention section:
While there's no cure for the common cold, there are the methods which can treat cold symptoms.
The following may help to cope with the symptoms of a cold:
A proper hydration, healthy raw food and the rest is a key for healthy body. So make sure you drink plenty of fluids – water is fine, but warm drinks can be soothing.
Initially my answer was removed by Shog9, because I believe the image had missing reference. I've added the image reference.
Now new moderator (anongoodnurse) found other reason to keep my answer deleted by saying:
Op's question's were: "...once a person catches a cold, his whole immune system becomes weak and is affected. In what way... ...how can one keep the immune system strong while the person is infected with a cold?" Your answer is a general treatise on the cols. Can you please address the OP's question with the bulk of your answer? anongoodnurse
My answer is bulk, because the are many questions to be addressed by OP.
how can one keep the immune system strong while the person is infected with a cold?
I've posted a long list of things which help to cope with the symptoms of a cold (which answer that).
So I really don't understand why my answer is still kept in deleted state.
I believe this answer answers the question and it should be undeleted.
And further improvements should be done by commenting on that answer (now in undeleted state it's not possible to even comment what's wrong, only moderators can, so it's like one-way communication). Secondly other users cannot suggest anything else (because they don't see the answer and the commenting feature is blocked), so I'm forced to do the changes to my content indicated only by one person, otherwise my answer won't be published. This is how it should work?
In that situation and similar others, I fail to see how the site can be moderated by community.
At Stack Exchange, we believe moderation starts with the community itself.