He is undergoing regular medical check-ups due to sickle-cell anemia.

He was diagnosed with agranulocytosis.

He contracted severe invasive streptococcal disease and underwent emergency surgery.

He is suffering from acquired immune deficiency syndrome (AIDS).

Zoonosis is a disease that spreads from animals to humans, or vice versa.

Hand washing and wearing masks are important for the prevention of COVID-19.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He was diagnosed with amyotrophic lateral sclerosis.