Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
Q: Abstract: Disseminated herpes simplex virus infection in a pregnant woman was successfully treated with acyclovir. Similar reported cases have suggested that acyclovir may be suitable for the treatment of disseminated or severe primary herpes in pregnant women.
A: 
Acyclovir