The enzyme-linked immunosorbent assay (EIA) is used: 1. To ...

[Beheh]

The enzyme-linked immunosorbent assay (EIA) is used:
 
  1. To indicate the presence of the antibody to HIV
  2. To reveal whether a person has AIDS
  3. To isolate the HIV virus
  4. As a confirmatory test after the Western blot

Question 2

When the Healthy Cities concept was brought to the United States:
 
  1. The cities chosen for the initial work were Los Angeles and New York City.
  2. Canada adopted the program at the same time for continuity across borders.
  3. The same strict guidelines that were implemented in Europe were used.
  4. Instead of cities, localities and smaller communities were targeted.

[itsakadoozi]

Answer to Question 1

1
The EIA is used to indicate the presence of the antibody to HIV.

Answer to Question 2

4
The concept of Healthy Communities was used to incorporate localities that were not necessarily cities.

[Beheh]

Thanks for the timely response, appreciate it

[milbourne11]

Gracias!