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Biological sciences

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Influence of temperature and relative humidity on the survival of Chlamydia pneumoniae in aerosols

Article Abstract:

Transmission of Chlamydia pneumoniae through aerosols was probably due to a direct transmission from one person to another, considering the short survival period of Chlamydia preumoniac in aerosols. Its survival was researched by using a chamber with a capacity of 114.5 liters. Survival rates measured at 8.5, 15, 25, and 35 degrees centigrade, and three different relative humidities (RH) of 5.50 and 95% for each temperature indicated a rapid decrease of Clamydia pneumoniae IFU in the first 30 seconds. Survival rates of Streptococcus pneumoniae, Streptococcus faecalis, klebsiella preumoniae, Chlamydia tracchomatis LGV2 and Cytomegalovirs were also established at 25 degree C and 95% RH and compared with that of Chlamydia preumoniac.

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Effect of inoculation techniques and relative humidity on the growth of molds on the surfaces of yellow layer cakes

Article Abstract:

The viability of using inoculation techniques such as spot, air cabinet, spray, and talc addition for initiating growth on cake surfaces and the role played by environmental relative humidity on mold growth kinetics were examined. Results revealed that the spot method, which depends on the properties of mold colonies to grow radially at a constant rate, proved to be the most reproducible. It was easy to employ, was more accurate, and enabled the study of the effects of the environment on mold-free shelf life.

Evaluation, Food, Food microbiology, Molds (Fungi), Injections

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Chlamydophila abortus in a brown skua (Catharacta antarctica lonnbergi) from a subantarctic island

Article Abstract:

Researchers have discovered a species of Chlamydophila in a seabird on Bird Island, South Georgian archipelago. The species was genetically closer to C. abortus than to C. psittaci.

Catharacta, Skuas

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