Pacific man-o'war
Pandemic
Papilloma
Paralytic shellfish poisoning
Parasitaemia
Parasite
Parasite density
Parasitism
Paratenic host
Parental
Paresthesiae
Parous rate
Paroxysm
Pathogen
Pathogenicity
Pathologist
Pathology
Peak biting time
Pedalium (pl. pedalia)
Pediculosis
Pelagia noctiluca
Pelagic
Pellagra
Periodicity
Periodicity
Persistent Chronic Diarrhoea
Person/vector contact
Petechiae
Peyers patches
Phlebotomine
Phylum
Physalia
Pinta
Piroplasms
Placebo
Plasmid
Platypus
Plerocercoid
Pneumocystis carinii
Poison
Polyarthritis
Polymorphism
Polyp
Portuguese mano'-war
Potentially Pathogenic Environmental Mycobacteria (PPEM)
PPD
Praziquantel
Predictive Value Negative
Predictive Value Positive
Preferred breeding sites
Prepatent Period
Prevalence
Prevalence rate
Primaquine
Primary cancer
Prions
Procercoid
Prodromal period
Prodrome
Proglottid
Prognosis
Proguanil
Proportional mortality rate (PMR)
Protein
Proto-oncogene
Protoscolex
Protozoa
Proximal
Pruritus
PSP
Pthiriasis
Pulmonary oedema
Pupa
Purified Protein Derivative (PPD)
Pyrexia
Pyrogenic