AETIOLOGY Q Fever is caused by the rickettsial pathogen Coxiella burnetii, a minute bacterium-like organism which may vary in size and shape. The smaller organisms will pass through microbial filters…
AETIOLOGY Alphaviruses are single-stranded RNA viruses, spherical in shape, and with a diameter of around 60-70nm. They have a lipoprotein envelope and have glycoprotein surface spikes containing major antigens. They…
