Whatever happened to using mice for laboratory testing

And now they're going to infect mice with the herpes virus which
will hopefully, according to this article, could control mice plagues.
I wonder if this particular strain is similar to what all of these
carp (fish) have been dying from? Seems like it's been happening more
and more lately. Related?? Makes me wonder. Carp are some UGLY
lookin' fish and you sure can't eat them.

Here's an excerpt from the article:

A GENETICALLY engineered herpes virus could help control
plagues of wild mice, researchers said today.

Preliminary research into the mouse cytomegalovirus has
showed it rendered mice infertile for up to 250 days –
equivalent to the breeding season in the wild.

"For example, we have to be able to ensure sufficient
transmission and induction of infertility among mice
populations.

"Secondly, we need to be certain that the virus is
species specific.

"Importantly, we have to be sure it is a publicly
acceptable pest control measure."

Interesting to say the least. Sure wouldn't hurt my feelings
if there were a few less mice out there. As long as it was
species specific. My cat loves to catch mice!! Poor thing.