Following the trail from that suspected outbreak led public health officials to this larger, previously unrecognized group of people who appear to be suffering from the disease.

Zoonoses are of interest because they are often previously unrecognized diseases or have increased virulence in populations lacking immunity.

In the science for design, research means searching for previously unrecognized variables and proposing realistic paths into desirable futures.

This altered the original intent of the park to include subsistence claims, previously unrecognized.

The tumor cells, which were previously unrecognized by the body's immune system are subsequently attacked.