At this time, only two chickenpox vaccines are recommended in the series. A third vaccine isn't not recommended, even if the varicella titer indicates no reaction or insufficient titer levels. See related link for references.
Another answer:Not all will be immune with two doses. A low titer may require a third dose.There is no harm or benefit in getting a third chickenpox vaccine, but the normal schedule is two vaccines.
People who have chickenpox normally develop immunity that lasts throughout their life, and they are unlikely to get chickenpox a second time. It is possible for a person who had chickenpox earlier to get shingles, a related disease that affects between one fifth and one third of those who had chickenpox earlier.
You can get chickenpox from someone who is infected.
In a way, it is. When a person is infected with the varicella zoster virus, the resulting illness is chickenpox. The virus does not leave the body and remains dormant in nerve cells and is later reactivated in about a third of people. Usually this is reactivation associated with a weakening of the immune system, and the symptoms are different from those of the first illness. It is extremely painful, as the nerve endings become inflamed and a rash is present. These symptoms are usually localized, unlike chickenpox which is general.
If you're thirteen or older, you can get the second chickenpox vaccine as long as it's been at least 28 days since the last one. For patients under thirteen, they must wait three months minimum until the second vaccine.
Shingles and chickenpox can only be transferred by someone who is infected.
First, you can't get shingles at any age unless you have previously had chickenpox. Although your chickenpox illness may have been so mild that you didn't notice, a diagnosis of shingles is proof that you had chickenpox. Second, only those who have never had chickenpox can get chickenpox from shingles. Third, shingles is only contagious through direct contact with wet lesions, and is not likely to be spread through casual contact.
You can only get it once, but it lies dormant in the body and can reactivate later in life as shingles or herpes zoster. More than one reactivation is rare and more than three is extremely rare.
The Twinrix vaccine is typically given in 3 doses. This is normal.
Children in that age group may typically get MMR, varicella, and possibly the third dose of hepatitis B.
Chickenpox blisters show up in waves, so after some begin to crust over, a new group of spots might appear. New chickenpox usually stop appearing by the seventh day, though they may stop as early as the third day. It usually takes 10-14 days for all the blisters to be scabbed over and then you are no longer contagious.
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