This would be a very serious problem if it changes enough to spread easily between people.

But there is no sign as yet that the flu can spread easily among people.

The infection usually begins with one eye, but may spread easily to the other.

These plants spread easily and can get out of control.

This means it spreads easily from one person to another.

It is most often caused by a virus, which can be easily spread to other people.

It usually spreads easily, especially among children in day care centers and schools.

These spores are light in weight and easily spread through the air.

In the cold and constant wet it spread all too easily.

Officials said the substance had been produced in such a fine form that it was easily spread through the air.