contagion

noun
1
the spread of a disease by close contact between people
سرایت, عدوی, انتشار بیماری, انتقال بیماری
2
a disease that can be spread by close contact between people
سرایت, واگیری, بیماری مسری, واگیر, عدوی
3
something bad that spreads quickly by being passed from person to person
سرایت, انتقال
the contagion of political extremism