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Systemic infections in which pathogen portal of entry is the respiratory tract.
Measles, chicken pox, glandular fever
Respiratory tract infections in which pathogen potral of entry is the respiratory tract
Diptheria, SARS, Tuberculosis
Gastrointestinal infections in which pathogen portal of entry is the gestrointestinal tract
Hepatitis, cholera, gastroenteritis
Diseases in which urogenital tract is portal of entry for pathogen
Hepatitis B and C, AIDS, Trichomoniasis
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