Table 1.

Antimicrobials to which pathogens are most resistant (indicated by PCA and hierarchical clustering for states PA, NY, MD, NM, MN, and CA).

	States	PA	NY	MD	NM	MN	CA
Antimicrobials
Ampicillin
Streptomycin
Gentamicin
Kanamycin
Cefoxitin
Sulfisoxazole
Tetracycline
Ciprofloxacin

Note: the shaded areas indicate the resistance of antimicrobials in the corresponding states.