Multipartite viruses tend to work fast and some of the infections are subtle and are unnoticed.

In general, these viruses tend to be lytic rather than lysogenic.

This virus tends to spread among children during summer and early fall.

That's especially a problem in winter, when bacteria and viruses can tend to linger longer in the dry air after someone coughs or sneezes.

The virus tends to peak during the spring in countries with temperate climates.

So the virus tended to kill selectively, overcoming a general drawback of germ weapons.

Many viruses tend to bind to the lipoproteins of the cell membranes and then penetrate into the cell.

The viruses also tend to break down relatively quickly into environmentally harmless remains when they are outside their host insect.

The new studies, one of which is being published today, show that these viruses tend to land on or near genes in the human cells.

Most approaches directed toward controlling the mosquitoes that carry viruses tend to run into problems because they simply kill the mosquitoes.