A member of staff was checking visitors for drug contamination.

While planning for such an event is warranted, government authorities should pay attention to a far more probable scenario: small-scale incidents involving food or drug contamination, which could cause widespread fear and economic disruption.

This may be attributed to intense competition, absence of North American Free Trade Agreement (NAFTA) parity, drug contamination delaying deliveries, and the high cost of operation, including security costs.

Additionally, paper money in other parts of the world show a similar drug contamination, and studies indicate that they might even serve as a vector of disease, though researchers disagree over how easily diseases are transmitted this way.

The National Center for Complementary and Alternative Medicine (NCCAM) stopped funding to studies of PC-SPES after the drug contamination was detected and made public, although the laboratory studies were later resumed.

Subsequent tests have confirmed this determination, and serve as the basis for court cases against drug dealers, since the basic level of drug contamination remains fairly constant throughout the UK, despite factors that might immediately be thought to affect levels, like rural or urban environments, rich or poor or areas with high or low crime rates.