The following points will highlight the top eleven viruses associated with Pyrexia. The viruses associated with pyrexia are:- 1. Yellow Fever 2. Dengue 3. Chikungunya 4. O' Nyong – Nyong 5. West Nile 6. Rift Valley Fever 7. Kyasanur Forest Disease 8. Omsk Haemorrhagic Fever 9. Colorado Tick Fever 10. Sand Fly Fever and 11. Argentinian and Bolivian Haemorrhagic Fever. [...]
Bacteriophages, in short, are the viruses that infect bacteria. F. Twort (1915) and F. d 'Herelle (1917) independently discovered bacteriophages. Bacteriophages attacking Escherichia coli are called coliphages or T-phages. Max Delbruck (1938) numbered coliphages as T-even phages (T2, T4, T6 etc.) and T-odd phages (T1, T3, T5 etc.). 1. Structure: The virion of T-even phage is binal or tadpole like [...]
Some of the most important properties of viruses are as follows: 1. Viral Size: The viruses are smallest disease causing agent in living organisms. The plant viruses range in size from 17nm to 2000nm, while animal viruses range in size from 20- 350 nm. 2. Viral Shape: The shape of virions greatly varies. For example, rod-shaped or filamentous (TMV), brick-shaped [...]