Clostridium baratii is an anaerobic, motile, gram-positive bacterium. It is a rare cause of infant botulism, in which newborns or infants lose their muscle tone, and develop trouble feeding due to a difficulty in breathing, which can be fatal. Newborns can recover spontaneously or as in two known cases improve with injected botulism antitoxin. As of 2015, the environmental source of this bacterium is unknown, despite extensive investigations when cases have occurred. (source)
The Wikipedia entry for Clostridium botulinum notes that:
Clostridium botulinum is a Gram-positive, rod-shaped, anaerobic, spore-forming, motile bacterium with the ability to produce the neurotoxinbotulinum. The botulinum toxin can cause a severe flaccid paralytic disease in humans and other animals and is the most potent toxin known to humankind, natural or synthetic, with a lethal dose of 1.3–2.1 ng/kg in humans.
C. botulinum is a diverse group of pathogenic bacteria initially grouped together by their ability to produce botulinum toxin and now known as four distinct groups, C. botulinum groups I-IV. C. botulinum groups I-IV, as well as some strains of Clostridium butyricum and Clostridium baratii, are the bacteria responsible for producing botulinum toxin.
C. botulinum is responsible for foodborne botulism (ingestion of preformed toxin), infant botulism (intestinal infection with toxin-forming C. botulinum), and wound botulism (infection of a wound with C. botulinum). C. botulinum produces heat-resistant endospores that are commonly found in soil and are able to survive under adverse conditions.
Firmicute helps us to digest fat that our bodies need for energy and are among the most common microbes in our gut. Although an oversupply of firmicutes has been linked to a higher risk of obesity, historically these bacteria helped early Europeans survive harsh winters with barely a wooly mammoth in sight. Now that we inhabit less challenging environments, an imbalance of too many Firmicutes in relation to another common gut microbe, Bacteroidetes, may be associated with obesity. However, having more Firmicutes than Bacteroidetes in the vagina is correlated with decreased risk of bacterial vaginosis. Some well-known Firmicutes are the pathogens behind diseases such as botulism and anthrax, but the vast majority are both completely harmless and necessary for normal digestion. Outside the microbiome, this diverse subgroup of bacteria is involved in processes ranging from fermentation of beer and wine, breakdown of milk into yogurt, and even toxic waste clean-up (called “bioremediation”) (Source Ubiome).