His symptoms are getting worse day by day.

Prevention of infectious diseases affects not only individual health but also the health of the entire society.

This epidemic spread all over the world, taking many lives.

He is showing symptoms of catatonia.

His child is suffering from rickets.

My sister has celiac disease, so she can't eat foods that contain gluten.

His life changed completely after he suffered from a severe illness.

He is an expert in pathology.

We have developed a new method for the tending of crop seedlings.

We start tending vegetable seedlings when spring comes.