In "Remade in America - A series about the newest immigrants and their impact on American institutions,” today's online edition of The New York Times carries an interactive map listing the number of foreign-born workers in the US by occupation and country of origin.
According to the map, the top ranking occupations for Cameroonians in the US are (by order of importance), Nurses 1,800; Nursing aides, orderlies and attendants 1,000; Policemen and other protective service workers, 700; and Managers and administrators, 500, bringing the total number of workers of Cameroonian origin in all occupations to 10,300.
Of course, anyone quite familiar with the Cameroonian community in the US will tell you that those numbers are very conservative, and that some significant categories have been left out. For example, it is highly unlikely that there are more Police officers of Cameroonian origin in the US than teachers and lecturers. Also, anecdotal evidence would suggest that there are more Cameroonians in the various branches of the military than in the police force and protective services (e.g., correction officers). In fact, the authors do warn that these numbers have a huge margin of error - an average of 51.5% for the stats on Cameroon immigrant workers. As they emphasize in the footnote, "The figures are subject to errors related to sampling and the structure of the survey, particularly for smaller immigrant and occupation groups."
In any case, the complete report makes for a very interesting read for anyone interested in the impact of new immigrants on American society.