How are the microbes in HPV spread? How does the vaccination protect people using the concept of the cell?:)?

by Rachel on August 25, 2011

{ 1 comment… read it below or add one }

tobyink August 25, 2011 at 11:05 pm

HPV is the human papillomavirus. Viruses are not usually considered to be “microbes”, as microbes are single-celled life forms, and viruses are not really alive in their own right.

HPV is often sexually transmitted, but can be spread from skin-to-skin contact, or even shared objects such as towels.

There are two commonly used vaccines against HPV. Gardisil protects against HPV-6, HPV-11, HPV-16 and HPV-18. (There are at least 30 documented strains of HPV.) Cervarix protects against only HPV-16 and HPV-18. Both vaccines also offer some protection (but not reliable, complete immunity) against some other less common strains of HPV.

HPV-16 and HPV-18 are the two most common cancer-causing strains of HPV; HPV-6 and HPV-11 do not usually cause cancer, but do cause genital warts.

Many vaccines work by introducing weakened or dead virus cells into the blood stream, which allows the immune system to detect them and develop antibodies to protect against them. When a real infection occurs, the immune system can quickly defend against it, using the “knowledge” it has already “learned”.

Both HPV vaccines work under a slightly different principle though. Instead of using weakened or dead virus cells, they use artificially created particles which are designed to “look like” the virus to the immune system. In particular, their surfaces are covered with the same proteins that cover the surfaces of the HPV virus cells.

Leave a Comment

Previous post:

Next post: