The cost to develop vaccine for humans and the fact that poor people are mostly affected has delayed development.

However, it was a year before the funds were made available, greatly delaying development.

He has another reason to delay development of his site, which includes three quaint 1920's houses.

The claims could be argued for years, delaying new development.

Those two processes often delay new development for months if not years.

Failure to do so could delay development, which is in no one's interests.

Yet Gazprom, the state gas company, has delayed development with long talks.

The War then delayed development on the lakes, and finally in the late 1940s, development got under way.

Most young children with 1p36 deletion syndrome have delayed development.

Legal action between the parties who bought the ground delayed its demolition and development.