● Communicable diseases are caused by pathogens passed from one human to another. ● Pathogens are viral, bacterial, parasitic and fungal. Methods of transmission include mucus, blood, breath, saliva and sexual contact. ● Contaminated surfaces, such as doorknobs, countertops, and playground equipment, provide a medium for passing disease from one human to another. ● Hence, keeping the surrounding clean, along with clean drinking water facility may protect us from getting a viral or bacterial disease. Hence, Statement1 is correct. ● Isolating the infected person helped in the recent COVID-19. Hence, Statement 2 is correct. ● Increasing the intake of salt can actually increase the chances of getting a non-communicable disease like cardiovascular disease. Hence, Statement 3 is NOT correct. ● Using only new syringes helps in protecting ourselves from getting in contact with an infected person. Hence, Statement 4 is correct .