Final answer:
Covering the nose and mouth with a tissue during sneezing and immediate hand washing are part of Droplet Precaution measures, which help prevent the spread of diseases through respiratory droplets.
Step-by-step explanation:
Covering the nose and mouth with a tissue when a person sneezes or coughs and washing hands immediately after are part of Droplet Precaution measures. The act of sneezing can release a spray of respiratory droplets into the air, which may contain infectious agents. Using a tissue to cover the mouth and nose and then disposing it properly can help prevent the spread of these droplets. Additionally, hand washing is crucial as it removes pathogens that may have been transferred from the respiratory tract to the hands. By following these measures, the spread of respiratory diseases like flu and COVID-19 can be minimized.