But perhaps the hardest part of a virus sleuth's job is knowing that it is extremely difficult to catch the perpetrators.
But some lawyers representing clients in cases involving construction problems with new condo developments and contract troubles say it is extremely difficult to get Mr. Cuomo's office to respond to the problems.
The Treasury Department has refused to require banks to report on their uses of TARP funds under the rationale that its extremely difficult to track because money is fungible.
But Harvard's Scott says it's "extremely difficult to define those institutions" and it sends their creditors a signal that the government will stand behind them.
For example, although polygamy can be part of a character's behavior, it is extremely difficult to maintain such a state of affairs because it negatively affects the happy-scape of so many other characters.
Having a compassionate witness is crucial in the processing and release of the victim's pain, and it is extremely difficult to heal without this witness.
It is extremely difficult to safeguard children's rights in detention - not just protection from violence, but a broad range of the civil, cultural, economic, political and social rights set out in the CRC.
Not only is it difficult for buyers to obtain mortgages, he said, but also "it's extremely difficult for developers like us to obtain financing for large-scale projects".
