I think for Covid-19 health education for pewople is -

• Stay at home and inform  family, so they can help monitoring the condition
• Wear a mask to prevent  droplets from spreading 
• Monitor own  symptoms
• Maintain hand hygiene and other preventive measures 
• Do not share utensils and wash them separately
• Clean and disinfect frequently touched objects and surfaces .

i think yes ,health education is a powerful weapon to tackle the spread of infectious disease  .

cause -

-it breaks the transmission of spreading of infection .

-if we know how the diseae spread we can control it by taking safety measures like wear mask, hand wash, clean the area to not spread germs.

-by encouraging the people in this activity it will stop spreading the teransmission and thus it stop and control the disease outbreak.