History of Vaccines
The word vaccine originates from the Latin Variolae vaccinae (cowpox), which Edward Jenner demonstrated in 1798 could prevent smallpox in humans. Today the term ‘vaccine’ applies to all biological preparations, produced from living organisms, that enhance immunity against disease and either prevent (prophylactic vaccines) or, in some cases,treat disease (therapeutic vaccines). Vaccines are administered in liquid form, either by injection, by oral or by intranasal routes.
World Health Organization. Immunization, Vaccines and Biologicals. Vaccine Fact Book 2012 https://web.archive.org/web/20160327113913/https://www.phrma-jp.org/wordpress/wp-content/uploads/old/library/vaccine-factbook_e/1_Basic_Concept_of_Vaccination.pdf
How Do Vaccines Work
When inactivated or weakened disease-causing microorganisms enter the body, they initiate an immune response. This response mimics the body’s natural response to infection. But unlike disease-causing organisms, vaccines are made of components that have limited ability or are completely unable,to cause disease (See Figure 4). WHO VACCINE FACT BOOK - 2011
Timeline Vaccine Approvals
1905 U.S. Supreme Court upholds state law mandating smallpox vaccinations
1906 to 1928 Vaccines against pertussis and diphtheria developed
1944 Pertussis vaccine recommended for universal use in infants
1947 DPT (tri-valent diphtheria/pertussis/tetanus) recommended by the AAP for routine use
1955 IPV (inactivated polio vaccine) licensed (was later modified in 1987)
1961 OPV (oral, live-virus polio vaccine) licensed
1963 Measles vaccine licensed
1959 to 1968 Quadrigen (DPT-IPV combo) used routinely [pulled off the market in1968 for safety and efficacy reasons]
1969 Rubella vaccine licensed
1971 MMR (tri-valent measles/mumps/rubella) licensed
1972 U.S. ended routine use of smallpox vaccine
1981 Japan licenses safer DPT vaccine, the acellular DTaP
1983 to 1985 first Hib (Hemophilus influenza B) vaccine (taken off the market in1985 for safety and efficacy reasons)
1986 Vaccine Injury Compensation Act passed
1986 recombinant Hepatitis B vaccine licensed
1987 Hib vaccine licensed
1988 Hib added to schedule
1988 Vaccine Injury Compensation Program Funded
1990 conjugate Hib vaccine licensed
1991 recombinant Hepatitis B recommended for all newborn infants and children
1993 DPTH (DPT-Hib combo) licensed
1995 Varicella licensed
1996 Dtap licensed; recommended for use instead of whole-cell DPT
1996 Hib-HepB combo licensed
1998 Lyme vaccine (Lymerix) licensed
early 1998 Rotavirus vaccine recommended by CDC for universal use in infants
Aug. 1998 Rotavirus vaccine licensed
Oct. 1999 Rotavirus vaccine pulled off the market due to significant adverse reactions
1999/2000 A Joint Statement by the U.S. Public Health Service, the AAFP, the AAP, and ACIP urging manufacturers to remove the preservative thimerosal as soon as possible from vaccines routinely recommended for infants.
2000 Prevnar (pneumococcal conjugate vaccine) licensed
2000 CDC recommends use of IPV instead of OPV (polio vaccine)
2002 GSK pulled Lymerix off the market
2002 Pediarix (penta-valent DtaP/HepB/IPV) licensed
2002 CDC encourages flu vaccine for children
2003 Inhaled flu vaccine (Flumist) being reviewed for approval by the FDA
2003 Smallpox vaccine for first-responders
https://web.archive.org/web/20030529035635/http://www.909shot.com/Timeline/timeline.htm
2004 Project BioShield, a $5.6 billion program, established to speed the development of medical treatments for the effects of biological and other unconventional weapons.
2007 Apr 25, 2007 (CIDRAP News) Health and Human Services (HHS) plan for developing and buying medical countermeasures against a range of biological, chemical, and other threats, with new anthrax and smallpox vaccines among the near-term priorities.
The 21-page implementation plan, released Apr 20 on the HHS Web site and in the Federal Register, details how the agency will acquire countermeasures against 14 threats on its priority list, which include nine category A biological agents, two category B biological agents, typhus, certain volatile nerve agents, and radiological and nuclear agents.
https://web.archive.org/web/20070708144558/http://www.mvrd.org/BioShieldArchives.cfm
Vaccine Technological Development
Vaccine development is generally a long process, taking years to design, hone, and test, in addition to feedback loops in that development process.
Vaccines by Disease
- Coronavirus Vaccines include the COVID-19 Vaccines
- Influenza Vaccines also known as Flu Vaccines
- SARS-CoV-2 Vaccines are generally referred to as COVID-19 Vaccines
Vaccines by Technological Type
- Live Attenuated Virus Vaccines - Measles, Mumps, Rubella, Varicella zoster
- Inactivated Vaccines - Hepatitis A, Influenza, Pneumococcal polysaccharide
- Recombinant DNA Vaccines - Hepatitis B
- Toxoid - Tetanus, Diphtheria
- Conjugate polysaccharide-protein - Pneumococcal, meningococcal, Haemophlius influenzea type b (Hib)
Vaccine Preservatives and Adjuvants
Vaccines may contain either or both preservatives and adjuvants these lists are incomplete.
Preservatives may be used to prevent contamination of multi-dose containers: when a first dose of vaccine is extracted from a multi-dose container, a preservative will protect the remaining product from any bacteria that may be introduced into the container. In some cases,preservatives may be added during manufacture to prevent microbial contamination.
Phenol Typhoid, pneumococcal polysaccharide Benzethonium chloride Anthrax 2-phenoxyethanol Inactivated polio Thimerosal Multi-dose influenza
Adjuvants enhance the immune effect of the vaccine antigen, but do not themselves act as antigens. Aluminum salts are the mos commonly used adjuvant for vaccines.
Aluminum Salts Adjuvanted Vaccines - Hepatitis A, Hepatitis B, Diphtheria, Tetanus, acellular Pertussis combinations (DTaP orTdap), Pneumococcal conjugate,Japanese encephalitis
Aluminum salt or AS04 (aluminum salt and monophospholipid A) Human Papilloma Virus (HPV) MF59 (oil in water emulsion) [one vaccine] H1N1 influenza