Bacterial Testing at Home
Researchers have shown that nearly 9% of foodborne illness outbreaks occur in the home. A recent prevalence survey indicated that approximately 50% of so-called hospital infections are actually acquired in the community, prior to patient hospitalization. Although the most frequently occurring microorganisms are those generally considered as non-pathogenic, the majority of homes were contaminated with species which are potentially pathogenic after reaching certain concentration threshold.
Figure 1: Pathogenic Microorganisms
A group of researchers from the UK conducted a study sampling from over 200 homes and analyzed the microbial species within the samples. Their results show that the most frequently occurring microorganism are Enterobacteria and Pseudomonads. In fact, over 50% of the samples collected contain different levels of these bacterial species. Other noticeable bacterial species are Staphylococcus, Salmonella, Streptococci, Micrococci with a percentage ranging from 16% to 31% of presence. Some of these bacteria are non-pathogenic at commonly occurring level. However, they can cause a series of severe disease if left uncontrolled. For example, diarrhea is the most common illness that Enterobacteria and Pseudomonads can cause.
Figure 3: Diarrhea
The National Sanitation Foundation (NSF) found that areas where food is stored and prepared had more bacterial contamination than other places in the home. Cutting board, coffee maker, refrigerator, kitchen sink are the most common places where have high contamination risk. Other place at home such as drains, faucets, bath towels, toothbrushes and shower tub also have high risk of bacterial contamination.
Figure 5: Bacteria in Towels
It can be very expensive to hire a professional to perform prevention diagnosis at home. There are a variety of rapid bacteria test kit available on the market which ranges from $1-10 per test. These tests can give a relatively accurate estimation on the bacterial contamination level. To prevent bacterial contamination, the most important thing is simply cleaning! Detergent products (i.e. spray, wipes) containing bleach are available in many markets and are very effective against bacterial contamination. We suggest performing routine cleaning with detergents at least every 2 days. A simple cleaning routine can ensure you and your family away from the majority of bacteria caused illness.
If you are interested in bacterial tests, we offer different options in the “Online Shop” section.
Fig.1. Pathogenic Microorganisms. Retrieved March, 2020 from
Fig.2. Enterobacteria. Retrieved March, 2020 from
Fig.3. Diarrhea. Retrieved March, 2020 from https://freesvg.org/ache-in-stomach
Fig.4: Bacteria in Sponge. Retrieved March, 2020 from
Fig.5: Bacteria in Towels. Retrieved March, 2020 from