2026年春运明天就将开始了，忙碌了一年的人们，陆续带着期盼踏上归途。春运期间容易遇到哪些健康风险？如何应对？ 春运期间 除了要注意呼吸道疾病的传播，春运期间，旅途中饮食不规律、食物种类改变等变化，很容易增加胃肠道的负担，而且旅途中的劳累也可能会让人抵抗力下 降。这些因素叠加，可能会让部分人出现肠胃不适的症状。 呼吸道传染病防护要做好 中国疾病预防控制中心监测显示，当前我国呼吸道传染病仍处于高发季节，总体呈下降趋势，流感疫情处于中流行水平，呼吸道合胞病毒、鼻病毒等病原体 也存在一定活动。 专家提示，戴口罩仍然是有效的防护手段。出行前，应该备好口罩、消毒湿巾、免洗手消毒液等用品。 北京大学第一医院感染疾病科主任医师 王贵强：春运的时候，火车是容易传播疾病的典型空间。包括密闭性、人群聚集性、空气相对不流通等因素，春运 的时候大家还是尽量戴口罩。 除了做好个人防护，接种疫苗仍然能够有效降低疾病感染风险。那么，既然流感病毒活动已经呈下降趋势，还有接种流感疫苗的必要吗？ 北京大学第一医院感染疾病科主任医师 王贵强：老年人和小孩还是建议接种流感疫苗，尤其是要出去探亲访友。火车上感染了也没控制、也没注意，把家 里人又感染了 ...

Market Overview - The "liquid mask" has emerged as a new protective product, available in spray, lotion, or gel forms, designed to create a protective film in the nasal cavity to block pathogens, dust, and allergens [2][3] - Various brands of "liquid masks" are available on platforms like Taobao, with significant price differences; for example, a brand priced at 50 yuan for 30 grams can be sprayed approximately 300 times, while another at 270 yuan for 20 milliliters offers around 160 sprays [2] Product Claims - Some vendors claim that "liquid masks" contain lgM nano-immunoglobulin, providing "invisible protection" with a 99.9% blocking rate against respiratory viruses, positioning it as a more effective alternative to traditional masks [3] - To enhance credibility, certain sellers present 24-hour in vitro activity test results and various "authoritative testing reports" asserting the product's ability to "precisely combat viruses" [3] Expert Opinions - Experts caution that "liquid masks" should not be considered primary protective gear; they are classified as "ordinary daily necessities" and lack reliable clinical evidence for virus prevention [4] - The core function of traditional masks is to block the inhalation and exhalation pathways of respiratory diseases, which "liquid masks" do not effectively replicate [4] - In high-risk environments, such as hospitals or crowded places, the use of compliant masks is essential for effective disease prevention [4]

Core Viewpoint - The "liquid mask" nasal spray is gaining popularity in the market, especially during the winter respiratory disease season, with annual sales exceeding 1 million bottles. However, its effectiveness and safety are under scrutiny, as it lacks clinical validation and may not replace traditional masks [2][3][4]. Product Description and Claims - The "liquid mask" claims to create a physical barrier in the nasal cavity to block viruses and bacteria, with a stated effectiveness of 99.9% [3][6]. - It is primarily marketed as a consumer product rather than a medical device, raising concerns about the accuracy of its claims [6]. Effectiveness Concerns - The product has not undergone clinical trials, and its protective effects are only supported by laboratory data, which may not translate to real-world effectiveness [4]. - The anatomical structure of the nasal cavity makes it difficult for the spray to cover all areas effectively, leaving some mucous membranes exposed to pathogens [5]. Comparison with Traditional Masks - Traditional masks, especially surgical masks, are designed with clear technical standards to physically block respiratory pathogens, while the "liquid mask" lacks such rigorous validation [5][6]. Health Risks of Long-term Use - Prolonged use of the "liquid mask" may pose health risks, particularly for individuals with allergies, as they may react negatively to the ingredients [7]. - There are concerns about the residual components of the spray affecting nasal health and the efficacy of other nasal medications [8]. Alternative Protection Methods - Other popular methods for preventing respiratory infections, such as gargling with salt water or taking vitamin C supplements, have been deemed ineffective or potentially harmful [9][10]. - The most effective preventive measure remains wearing masks, especially in high-risk seasons, along with proper hygiene practices [11][12]. Recommendations for Public Health - During the winter season, it is crucial for the public to be cautious of exaggerated claims and to avoid purchasing unverified products. Vaccination and proper mask-wearing are emphasized as the best strategies for preventing respiratory infections [14].

Group 1 - The core concept of the article revolves around the rising popularity of a product called "liquid mask," a nasal spray that claims to block viruses and bacteria, with some products reportedly selling over 1 million bottles annually during the peak season for respiratory infections [1][2]. - The product is marketed as creating a physical barrier in the nasal cavity to isolate pathogens and allergens, with claims of a 99.9% blockage rate [1][5]. Group 2 - Medical experts express skepticism regarding the effectiveness of the "liquid mask," highlighting that it has not undergone clinical validation and lacks supporting research data for its protective claims [6]. - The nasal cavity's complex structure makes it difficult for the "liquid mask" to provide comprehensive coverage, leaving areas unprotected and potentially vulnerable to infection [6]. - The durability of the protective film created by the "liquid mask" is questioned, as everyday actions like nose-picking or sneezing can compromise its effectiveness [6]. Group 3 - The article warns against exaggerated claims and advises consumers to be cautious about purchasing unverified alternatives to traditional masks, especially during the winter season when respiratory viruses are prevalent [9]. - It emphasizes that wearing proper masks, such as surgical masks or N95 respirators, remains one of the simplest and most effective methods for protection against respiratory infections [10].

Core Viewpoint - The "liquid mask" nasal spray is gaining popularity as a product that claims to block viruses and bacteria, especially during the winter season when respiratory infections are prevalent. However, its effectiveness and safety are under scrutiny, with experts questioning its claims and potential health risks [1][3][5]. Group 1: Product Description and Market Performance - The "liquid mask" is marketed as a nasal spray that forms a physical barrier in the nasal cavity to isolate pathogens and allergens, with some products reportedly selling over 1 million bottles annually [1][3]. - The product claims to have a "99.9% blocking rate" against viruses, which is considered exaggerated and potentially misleading [8]. Group 2: Effectiveness and Scientific Validation - Experts express skepticism about the effectiveness of the "liquid mask," noting that it has not undergone clinical validation, and its protective effects are only supported by laboratory data, which may not reflect real-world conditions [5][6]. - The nasal cavity's complex structure makes it difficult for the spray to cover all areas effectively, leaving some mucous membranes exposed to pathogens [6]. Group 3: Comparison with Traditional Masks - The "liquid mask" is not a substitute for traditional masks, particularly medical surgical masks, which have established technical standards for blocking respiratory pathogens [8]. - Traditional masks provide a clear physical barrier, while the "liquid mask" lacks the rigorous testing and classification as a medical device, raising concerns about its safety and efficacy [8]. Group 4: Health Concerns and Long-term Use - Long-term use of the "liquid mask" may pose health risks, especially for individuals with allergies, as they may react negatively to the ingredients in the spray [9]. - There is a lack of systematic evaluation regarding the residual components of the spray and their potential impact on nasal mucosa health and the effectiveness of other nasal medications [9]. Group 5: Recommendations for Public Health - During the winter season, it is advised to wear proper masks, such as medical surgical masks or N95 masks, to effectively reduce the risk of virus transmission [10][11]. - Public health measures should include vaccination, proper mask usage, hand hygiene, and ventilation to combat respiratory infections [11].

Core Viewpoint - The "liquid mask" nasal spray is gaining popularity as a protective measure against respiratory viruses, especially during the winter season when respiratory infections are prevalent, but its effectiveness and safety are under scrutiny [1][4][5] Group 1: Product Overview - The "liquid mask" is marketed as a nasal spray that forms a physical barrier in the nasal cavity to block pathogens and allergens, claiming a "99.9% blockage rate" [1][4] - It is primarily sold as a consumer product rather than a medical device, lacking rigorous clinical validation [6][7] Group 2: Effectiveness and Limitations - The effectiveness of the "liquid mask" is questionable, as it has not undergone clinical trials, and its protective capabilities are only supported by laboratory conditions [5][6] - The nasal cavity's complex structure makes it difficult for the spray to cover all areas effectively, leaving some mucous membranes exposed to pathogens [5] - The protective film created by the spray is not durable and can be easily disrupted by normal activities such as nose-picking or sneezing [5][7] Group 3: Comparison with Traditional Masks - Traditional masks, especially surgical masks, are designed with specific technical standards to physically block respiratory pathogens, while the "liquid mask" lacks such standards [6] - The claims of the "liquid mask" being a comfortable alternative to traditional masks are misleading, as they do not provide equivalent protection [6] Group 4: Health Concerns - Long-term use of the "liquid mask" may pose health risks, particularly for individuals with allergies, as they may react negatively to the ingredients [7] - There is no comprehensive assessment of how the residual components of the spray affect nasal mucosa health or the efficacy of other nasal medications [7] Group 5: General Recommendations for Respiratory Protection - During the high season for respiratory infections, traditional preventive measures such as wearing masks, hand hygiene, and vaccination remain the most effective strategies [15][16] - The public is advised to be cautious of exaggerated claims regarding alternative products and to prioritize scientifically validated methods for disease prevention [15][16]