Chapter 21.3, Problem 4AYP

Summary Introduction

To enlist:

Possible causative agents, modes of transmission, virulence factors, diagnostic techniques, and prevention and treatment of upper respiratory tract infections like common cold, sinusitis, otitis media, pharyngitis and diphtheria.

Concept introduction:

Diseases are caused due to the growth of various microorganisms inside the human body. They grow in the respiratory tract, nasal tract and alveoli of the lungs. Infection is caused by various strains of bacteria and viruses which penetrate the immune system of the host and proliferate with production of toxins inside the infected cells.