Drivers, Relays, and Solid State Relays. Driver circuits. A typical digital logic output pin can only supply tens of MA of current. Even though they might require the same voltage levels, small external devices such as high-power LEDs, motors, speakers, light bulbs, buzzers, solenoids, and relays can require hundreds of MA. Larger devices might even need several amps.
Communicable Diseases Epidemiology Section Wisconsin Department of Health Services Division of Public Health P-42052 (Rev 08/2015) Page 1 of 2 Handwashing Disease Fact Sheet Why is handwashing important? Handwashing, when done correctly, is the single most effective way to prevent the spread of communicable diseases. Good handwashing technique is easy to learn and can significantly reduce the spread of infectious diseases among. children and adults.
Most vaccine-preventable diseases are spread from person to person. If one person in a community gets an infectious disease, he can spread it to others who are not immune. But a person who is immune to a disease because she has been vaccinated canât get that disease and canât spread it to others.The more people who are vaccinated, the fewer opportunities a disease has to spread.efore the middle of the last century, diseases like whooping cough, polio, measles, Haemophilus influenzae, and rubella struck hundreds of thousands of infants, children and adults in the U.S.. Thousands died every year from them.