After spending approximately 40 weeks inside the womb, the average newborn weighs 7 1/2 pounds. Most babies weigh between 5 1/2 and 10 pounds. The average length of a newborn is 20 inches (50 centimeters), with a range of 18 to 22 inches. The average head circumference (the distance around the head) is 14 inches (35 centimeters).
Lactobacillus and Bifidobacterium are the most common probiotic bacteria. The Lactobacillus genus has 18 different bacteria strains, while the Bifidobacterium genus consists of eight strains.
The proteolytic bacteria most commonly release either the type A or type B toxin and are found in canned foods, while the non-proteolytic Clostridium botulinum produce the type A or type E neurotoxin and are present in meat, fish, or homemade meals (Peck et al. 2010).