Table 1:

Types of platform technologies currently used in human vaccine production

	Type	Form of vaccine antigen (protein)
Whole vaccines	Inactivated	Killed pathogens
	Live-attenuated	Weakened pathogens
Component vaccines	Protein subunit	Proteins isolated from pathogens
	Conjugate	Pathogen surface carbohydrates linked to a carrier protein
	Recombinant subunit	Pathogen proteins produced by an expression system by genetic engineering
	DNA/RNA based	Nucleic acids encoding pathogen proteins.
	Viral vectors	Heterologous virus containing genes encoding pathogen proteins.