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''Legionella longbeachae'' is one species of the family Legionellaceae. It was first isolated from a patient in Long Beach, California. It is found predominantly in potting soil and compost. In humans, the infection is sometimes called Pontiac fever. Human infection from ''L. longbeachae'' is particularly common in Australia, but cases have been documented in other countries including the United States, Japan, Greece and the UK. The infection can be very serious, often leading to hospitalisation and sometimes death. Like other ''Legionella'' species, person-to-person transmission has not been documented. However, unlike other species, the primary transmission mode is inhalation of dust from contaminated compost or soil that contains the organism causing legionellosis. Modes of transmission include poor hand-washing practices after gardening, long-term smoking, and being near dripping hanging flower pots. Awareness of a possible health risk with potting mix protected against illness.〔 Inhalation and ingestion are possible modes of transmission.〔 Exposure to aerosolized organisms and poor gardening hygiene may be important predisposing factors to'' L. longbeachae'' infection.〔 ==Compost and potting mix warning labels== Compost must be handled with care, damped down with water to reduce dust before handling, and use of a face mask covering the nose and mouth to reduce the risk of inhaling the dust is needed, especially for those at high risk from infection. Studies advocate the introduction of an industry standard that ensures the use of face masks when handling potting mix and attaching masks and warning labels to potting mix bags sold to the public. Compost packaging in Australia has an ''L. longbeachae'' warning label. The New South Wales state government recommends that people reduce exposure to potting mix dust by following the manufacturers' warning present on potting mix labels, including: * Wetting down the potting mix to reduce the dust * Wearing gloves and a P2 mask when using potting mix * Washing hands after handling potting mix or soil, and before eating, drinking or smoking〔(【引用サイトリンク】title=Legionnaires disease Factsheet - NSW Department of Health )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Legionella longbeachae」の詳細全文を読む スポンサード リンク
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