Although mortality is usually low, the virus can produce weight loss and poor growth, causing economic loss to farmers.

For many who do get sick, the virus produces no symptoms for 20 years or more.

By contrast, more aggressive viruses produce innate responses lasting 24 hours or longer.

However, viruses sometimes produce colorful discharge as well, so this isn't considered a fail-safe test.

These attenuated viruses produce little or no illness in most people.

A given bacterium or virus can produce one disease only.

Further, the two viruses are very much alike, and can produced similar results in diagnostic testing.

But the virus did not produce the symptoms that made patients feel sick.

This virus can produce 10 billion particles a day.

At the time of lysis the virus can produce over 100 progeny.