In practice, however, the risks are considered to be non-existent, since they have not been supported by experimental or epidemiological investigations. This narrowing of conception and research strategies may leave potential hazards unapprised until they actually happen. The main purpose of this paper is to raise awareness and catalyze discussions. If this in its turn may contribute to having resources available for public funding of independent research, the efforts of the author have been well rewarded. Immunity and vaccination.
Vaccination is a form of prevention or prophylaxis of infectious disease and cancers.
The reasons for giving priority to prevention and prophylaxis are stronger than ever, as development of resistance in microorganisms, viruses and cancer cells are reducing the therapeutic opportunities offered by chemotherapeutics and antibiotics. Through their continual battle with microorganisms and viruses, vertebrates have evolved an elaborate set of protective measures collectively termed the immune system. Infection with a specific disease agent may initiate immunity to that agent, and an individual that is immune to a specific infectious agent will be left unharmed when infected by that agent again. Vaccination intends to provide individuals with immunological protection before an infection actually takes place. However, the immune system is very complex, and immunity against different infectious agents is based on fine-tuned balances between the various types of cells, signal substances and antibodies that make up the total immune system.