Delta Pronunciation: (del-ta). Delta letter quick facts. Delta is the fourth letter (Greek letter #4) in the modern day Greek alphabet. The Delta letter appears before Greek letter Epsilon which is pronounced (ep-si-lon), and after the letter Gamma which is pronounced (gam-ah). Delta Letter Template size: 600 X 600 pixels. Greek letter set: #1 to #12 (12 color combinations).
The most common disease-causing agents are viruses, bacteria, protozoa, and parasitic worms. Viruses are not living, but do get transferred between living organisms. The West Nile Virus is transferred from mosquitoes to humans. Vaccines are a good way to prevent the spread of viruses.iruses are the disease-causing agent that most people are familiar with. They cause colds, the flu, HIV, meningitis, polio, chicken pox, rabies, West Nile, and a number of other diseases. Viruses themselves aren't living things, but they do get transmitted between living organisms.
These âbad-newsâ microbes are called disease-causing microbes and can make humans, animals and plants sick by causing infection and disease. Most microbes belong to four major groups: bacteria, viruses, protozoa or fungi.(To find out more, see the âBacteria/Viruses/Protozoaâ fact sheets).Disease-causing microbes can also be called pathogens, germs or bugs and are responsible for causing infectious diseases.They can also contribute to chronic diseases and conditions, and are now being linked with coronary artery disease, diabetes, and certain types of cancer, multiple sclerosis and chronic lung disease.ost microbes belong to four major groups: bacteria, viruses, protozoa or fungi. (To find out more, see the âBacteria/Viruses/Protozoaâ fact sheets). Disease-causing microbes can also be called pathogens, germs or bugs and are responsible for causing infectious diseases.