His grandfather is suffering from Alzheimer's disease.

He is an expert in pathology.

She was diagnosed with Addison's disease.

My pet civet is very cute.

Prevention of venereal diseases is important.

My cat's forehead is very small.

When a leap second is added, the world's clock shifts by one second.

My grandfather passed away from tuberculosis.

He died of disease at a young age.

Pathogens can pose a significant threat to human health.