A mourning cloak is flying around the garden.

My pet budgerigar is very smart.

He was diagnosed with agranulocytosis.

Anthropozoonosis, or animal-derived infectious diseases, have the potential to spread between humans and animals.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

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

He contracted severe invasive streptococcal disease and underwent emergency surgery.

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

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

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.