The influenza virus differs considerably from other infectious agents in that it changes (mutates) from year to year, making it more difficult to immunize people against the flu. This is not a problem with measles, mumps, rubella, Hemophilus influenzae (a bacterium) or other disease agents that we vaccinate against. Even with the flu, it is better to have a solid chance at protection with a vaccine than to risk the effects of diseae, particularly in young children, the elderly and others susceptible to severe infection.

Herd immunity is not a "coincidence theory". I don't know where you got this idea. It is a well-accepted concept in vaccine science, whose existence is backed by solid data.

"A strong immune system is what is needed, a system as free of accumulated toxins as possible"

Now _there's_ an example of a theory without a factual basis. You don't protect yourself and your children from disease by eliminating imaginary "toxins".

Here's more "coincidence" to explain away for those who don't believe in herd immunity or the value of vaccination:

"County health officials yesterday re-emphasized the importance of vaccinating children against measles after three siblings – two of whom attend a charter school in San Diego – were diagnosed with the potentially fatal viral infection.

None of the youngsters had been inoculated against the disease.
Two of the siblings go to the San Diego Cooperative Charter School in Linda Vista, which has the highest percentage of students not vaccinated for measles of any campus in the city, said officials from the San Diego Unified School District.

Ten percent of the charter school's 380 students were not vaccinated. The figure for most schools in San Diego County is 1 percent to 2 percent, said Jennifer Gorman of the San Diego district's nursing and wellness program. The statewide average is about 1.5 percent, according to the California Department of Public Health.

“A school with this rate of children who aren't vaccinated is the type we worry most about,” said Dr. Mark Sawyer, an infectious-disease pediatrician at Rady Children's Hospital in Kearny Mesa. Sawyer also works part time as medical director of the county health department's immunology branch...

Some parents fear that inoculations contain thimerosal, which includes mercury and might cause autism or other diseases.

“Carefully performed scientific studies have found no relationship between (the) vaccine and autism,” said the federal Centers for Disease Control and Prevention. Moreover, school and health officials stress that the vaccine for measles, mumps and rubella does not contain thimerosal or mercury...

Facts about measles
Transmitted through respiratory droplets from the nose and mouth.

Takes seven to 18 days for symptoms to appear after exposure.

Symptoms include fever, runny nose, cough, loss of appetite, “pink eye” and a rash lasting five or six days.

Complications include diarrhea, ear infections and pneumonia. Can cause death.

Patient can infect others four days before to four days after rash appears.

Vaccination protects against measles, mumps and rubella.

Widespread vaccination has dramatically reduced the measles infection rate. In San Diego County, the case count declined from 985 in 1990, to 22 in 1991 and one in 2006. No deaths have occurred since 1990, when there were three.

The three infections announced yesterday were defined as the first reported outbreak since 1991. An outbreak involves two or more cases from a single source."


http://www.signonsandiego.com/news/metro/20080205-9999-1m5measles.html


So - more children infected with a potentially deadly disease, and many more placed at risk - all because the parents of unvaccinated kids were either careless or believed false tales about immunization.