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空调吹成白肺?这个致病菌到底从何而来
Bei Jing Qing Nian Bao· 2025-06-29 23:23
Core Viewpoint - The article highlights the dangers of Legionella bacteria, which can thrive in air conditioning systems and other warm, moist environments, leading to Legionnaires' disease, a severe form of pneumonia that can be fatal if not treated promptly [1][2]. Group 1: Background and Discovery - Legionella bacteria were first identified during a mysterious outbreak in 1976 at a veterans' convention in Philadelphia, where 221 people became ill and 34 died [2]. - This bacterium is commonly found in water sources and is resistant to disinfectants and antibiotics due to its protective polysaccharide capsule and ability to form biofilms [2]. Group 2: Environments Favoring Growth - Legionella can thrive in various warm and humid environments, including: - Central air conditioning systems in hotels, where contaminated cooling towers can release aerosols [3]. - Unregulated hot water pools in spas and hotels [4]. - Household appliances like air conditioners, showerheads, and water heaters that are not regularly cleaned [4]. - The optimal growth temperature for Legionella is around 35 degrees Celsius, with a range of 25 to 42 degrees Celsius being suitable for proliferation [4]. Group 3: Symptoms and Risks - Legionnaires' disease can present severe symptoms, with a rapid progression from infection to severe pneumonia within days [5]. - The mortality rate for Legionnaires' disease can range from 5% to 30%, depending on the severity of the infection [5]. - Symptoms may include respiratory distress, gastrointestinal issues, and neurological symptoms, indicating multi-system damage [5]. Group 4: Antibiotic Resistance - Common antibiotics like penicillin and cephalosporins are ineffective against Legionella due to its intracellular parasitic nature [7]. - Patients exhibiting symptoms such as high fever, muscle pain, and gastrointestinal distress should seek medical attention promptly, especially if they have been in environments conducive to Legionella growth [7]. Group 5: Prevention and Maintenance - Regular cleaning and disinfection of household appliances are crucial to prevent Legionella growth: - Air conditioners should be cleaned thoroughly, including filters and condensate pans [8]. - Water heaters should be maintained at temperatures above 60 degrees Celsius [8]. - Showerheads should be cleaned weekly to remove biofilm [9]. - Individuals with weakened immune systems should take extra precautions to avoid exposure to potential sources of Legionella [10].
夏季开空调需警惕军团菌肺炎
Ke Ji Ri Bao· 2025-06-09 23:55
Core Viewpoint - The article discusses the rising health risks associated with Legionnaires' disease, particularly in the context of air conditioning usage during the summer months, highlighting a recent case of a man who developed severe symptoms after using air conditioning for three days [1]. Group 1: Disease Overview - Legionnaires' disease is a type of atypical pneumonia caused by Legionella bacteria, which can lead to more severe symptoms compared to regular pneumonia [2]. - The disease can manifest in two forms: Pontiac fever, which is milder and self-limiting, and Legionnaires' pneumonia, which can progress rapidly to severe respiratory failure within days to a week [2]. - The mortality rate for Legionnaires' pneumonia can range from 5% to 30%, indicating a significant health risk [2]. Group 2: Infection Sources - Legionella bacteria thrive in warm, humid environments, with optimal growth temperatures between 25°C and 42°C, particularly around 35°C [3]. - Central air conditioning systems, especially cooling towers, are conducive to the growth of Legionella, which can be aerosolized and inhaled, leading to infection [3]. - Other potential sources of Legionella include natural and artificial water sources, hot water systems, showerheads, humidifiers, and even moist soil [3]. Group 3: Treatment and Prevention - Conventional antibiotics are ineffective against Legionnaires' disease, necessitating early detection and treatment [4]. - High-risk groups include individuals over 50, smokers, those with chronic diseases, and immunocompromised patients [4]. - Preventive measures include regular cleaning and disinfection of air conditioning units and hot water systems, as well as maintaining good hygiene practices [5][6].
“美国制造”流量汹涌:卖家狂欢,买家缺席
Hu Xiu· 2025-06-05 07:20
Group 1 - The trend of searching for "Made in USA" products has surged significantly, with a 220% year-over-year increase in searches for "only American-made products" [3] - The Facebook group "Enjoy Non-Chinese Manufacturing" has rapidly expanded to approximately 2,000 members this year, reflecting growing consumer interest in domestic products [2] - Amazon has seen a dramatic rise in searches related to "Made in USA," increasing from 26,000 to 126,000 searches in the past 30 days, nearly a fivefold increase [6] Group 2 - Despite the increased interest in "Made in USA" products, this curiosity has not yet translated into widespread purchasing behavior, as many consumers remain price-sensitive [9][10] - A test conducted by a seller revealed that despite consumer claims of willingness to pay more for American-made products, none purchased the higher-priced American version when presented with a cheaper Chinese alternative [13][14] - A report indicated that 33% of consumers opted for lower-priced brands due to increased costs from tariffs, highlighting the price sensitivity of consumers [16] Group 3 - The cost of manufacturing in the U.S. is significantly higher than in China, with the average cost of producing a pair of sneakers in China being $15 compared to $35-$45 in the U.S. [19] - The challenges of returning manufacturing to the U.S. are compounded by higher wages and stricter regulations, making it difficult for American-made products to compete on price [20][21] - The notion of bringing manufacturing back to the U.S. is seen as a political dream rather than a feasible reality, with many industries still heavily reliant on imports [22]
夏季首开空调,警惕肺部感染(服务窗)
Ren Min Ri Bao· 2025-06-02 21:43
Core Viewpoint - The article discusses the health risks associated with using air conditioning systems that have not been properly maintained, particularly the risk of Legionnaires' disease caused by Legionella bacteria proliferating in stagnant water within air conditioning units and other water systems [1][2]. Group 1: Health Risks - Legionnaires' disease is a severe lung infection caused by Legionella bacteria, which can lead to symptoms such as high fever, severe cough, and difficulty breathing [1]. - The bacteria thrive in warm, moist environments, making uncleaned air conditioning cooling towers, showerheads, and hot water pipes potential breeding grounds [1]. - The disease is more prevalent from June to September, particularly affecting individuals with chronic respiratory diseases or weakened immune systems [1]. Group 2: Prevention Measures - Regular cleaning and disinfection of water systems, including air conditioners and water heaters, are essential to prevent bacterial growth [2]. - It is recommended to wear a good quality mask during cleaning to avoid inhaling pathogens [2]. - For water fixtures that have not been used for a long time, it is advised to let the water run for one to two minutes before use to flush out stagnant water [2]. Group 3: Summer Cooling Tips - Before using air conditioning for the first time in summer, it is important to thoroughly clean the filters and condensate trays [2]. - Setting the air conditioning temperature around 26 degrees Celsius and ensuring proper ventilation every two to three hours is recommended [2]. - When swimming, it is advisable to choose well-disinfected pools and avoid inhaling mist from cooling devices [2].
大数据“跑腿”、开设绿色通道 监管部门多措并举助力经营主体信用修复
Yang Shi Wang· 2025-05-06 05:56
Core Viewpoint - The national market regulatory system is launching a "Credit Repair Service Year" initiative to assist enterprises in accelerating credit repair and enhancing their credit levels [1] Group 1: Credit Repair Initiatives - The Fujian market regulatory department has innovated a "punishment + service" dual list model to precisely repair enterprise credit [1] - A case study of a bathroom product manufacturer highlights the importance of timely credit repair after receiving an administrative penalty for non-compliance with national standards [4] - The administrative penalty must be publicly disclosed for three years, which can significantly impact the enterprise; however, eligible enterprises in Fujian can initiate repair procedures early [6] Group 2: Implementation and Impact - The Fujian market regulatory department has established a green channel for credit repair, allowing for a one-day approval process once the enterprise meets the repair conditions [6] - Last year, Fujian issued 25,000 guidance lists to assist enterprises in credit repair [8] - The "免审即享" (Exemption from Review) policy allows individual businesses that have been listed as operating abnormally due to late annual reports to be automatically removed from the list upon correcting their errors, benefiting 511,625 individual businesses in Fujian last year [12]
0人付款!美国人买美国货还是中国货?结果扎心了……
Guan Cha Zhe Wang· 2025-04-29 04:29
Core Viewpoint - The experiment conducted by Afina's owner revealed that American consumers are unwilling to pay significantly higher prices for "American-made" products compared to "Asian-made" alternatives, despite claims of supporting local manufacturing [1][3][10]. Group 1: Experiment Details - Afina's owner, Ramon van Meer, set up a pricing experiment with two options for the same showerhead: one priced at $129 for "Asian-made" and another at $239 for "American-made," which is nearly double the price [2][5]. - During the experiment, approximately 25,650 American consumers visited the purchase page, with 3,560 adding the "Asian-made" version to their carts and 584 completing the purchase, while the "American-made" version had only 24 add-to-carts and zero purchases [2][5]. Group 2: Economic Context - The experiment's results highlight a disconnect between consumer intentions and actual purchasing behavior, indicating that high prices for American-made goods are not supported by consumer willingness to pay [5][10]. - The owner criticized the current economic conditions in the U.S., stating that inflation has made "American-made" products a luxury that many consumers cannot afford [6][9]. Group 3: Manufacturing Challenges - Van Meer expressed challenges in localizing production, citing issues such as lack of manufacturing capacity and skilled labor in the U.S. [8][9]. - Despite efforts to find alternative manufacturing locations, the reliance on Chinese suppliers for materials remains significant, indicating that the supply chain is still heavily dependent on Asia [8][9]. Group 4: Consumer Sentiment - Feedback from consumers on social media echoed the experiment's findings, with many stating they prioritize lower prices over the origin of products, reinforcing the notion that price sensitivity is a major factor in purchasing decisions [10][11]. - The sentiment reflects a broader skepticism about the feasibility of reviving American manufacturing without substantial investment in infrastructure and workforce development [11].