Humans have various samples of microbe colonize from different prats of the body such as gut, skin, mouth and vagina are aggregated with any number of human tissues or fluids from various tracts of the human body. Most of the microbes that usually colonize in humans are co-exist without causing any harmful effects on the humans this are called as commensal. This microbe includes virus, bacteria and fungi with almost around 1600 samples where present.
Among all this the gut microbiome plays a highly personalized role, whereas Bacteroides form an inter-individual variation. There are non-pathogenic microorganisms can invade humans through the metabolism they produce. It is estimated that there are almost 10 times as many microbial cells in the human body. Skin and vaginal sites showed smaller diversity than the mouth and gut, the bacteria, such as Actinomyces viscosus and A. naeslundii, present in the mouth, can be responsible for secretion of sticky substance called plaque as this forms calculus in the later stage. There are certain bacteria that dissolves tooth enamel causing tooth decay.
The vaginal microbes have various lactobacillus species as Lactobacillus acidophilus, causes the most common species Effects of the vaginal flora can lead to infections such as bacterial vaginosis or candidiasis
Human gut forms bacterial infection by Archaea as almost 50% humans can easily develop this kind of infection. There are also particular yeast present in the human gut as study states that candida due to their changing property can gain the ability to become pathogenic and immunocompromised and fungal genera are present on healthy human skin, with some variability by region of the body.
Apart from this virus such as bacterial viruses can colonize various sites in the human body. Bacteria and fungi are normally present in the conjunctiva with the class of gram positive and gram-negative cocci. As microbes spread disease and infection easily to the humans it is estimated that human intervention might impede human health, hospital safety procedures, food product design, and treatments of disease.
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