________ refers to the purchase, sale, or exchange of goods and services across national borders.

Bacillus anthracis is a Gram- spore former; causes anthrax; a zoonotic disease of domestic livestock; produces hemolysin

Clostridium tetani – found in soil and causes tetanus

Helicobacter pylori – microaerophilic spiral shaped; causes peptic ulcers; has a potent urease; can grow in the mucus lining of the interior stomach

Rickettsia prowazekii – causes endemic typhus; spread by body lice

Salmonella typhi – causes typhoid fever; only found in humans

Salmonella enteritidis and S. typhimurium are Gram+ organisms that cause foodborne gastroenteritis

Streptococcus pneumoniae , Streptococcus salivaris, Enterococcus faecalis, and  Staphylococcus epidermidis are all Gram+ organisms.

Serratia marcescens is a Gram- organism that is nonpathogenic; found in soil; produces orange pigment

Staphylococcus, Streptococcus, Bacillus, and Chlamydia are all Gram+ organisms.