Table 4.

Subunit vaccines showing delivery systems and modalities of vaccination.

Vaccine	Vaccination	Challenge	RPS	Ref.
Subunit vaccines Sip (tSip (1))	Intraperitoneal	Intraperitoneal	55%	[22]
Subunit vaccines Ornithine carbamoyl-transferase	Intraperitoneal	Intraperitoneal	0%	[24]
Recombinant FbsA subunit	Intraperitoneal	Intraperitoneal	40.63%	[23]
Recombinant a-enolase subunit	Intraperitoneal	Intraperitoneal	62.50%	[23]
Subunit vaccines Phosphoglycerate kinase	Intraperitoneal	Intraperitoneal	35%	[24]
PMMMA-PLGA *	Oral 1	Bacterial inhibition test	ND	[34]

* Poly[(methyl methacrylate)-co-(methyl acrylate)-co-(methacrylic acid)]-poly(d,l-lactide-co-glycolide); ¹ ND = not done.