According to the WeChat official account of the China Center for Disease Control and Prevention, the "May Day" holiday in 2025 will come, during which the flow and gathering of people, domestic travel and outbound travel will increase significantly. The Chinese Center for Disease Control and Prevention kindly reminds that during the May Day holiday, attention should be paid to the prevention of COVID-19 infection, food poisoning, norovirus enteritis, tick borne diseases, hand foot mouth disease, monkeypox and zoonotic infectious diseases when traveling in China; Traveling to tropical and subtropical countries and regions also requires attention to preventing mosquito borne infectious diseases such as dengue fever and malaria. It is suggested to keep good hygiene habits for COVID-19 infection. When coughing or sneezing, cover your mouth and nose with paper towels, towels, etc; Wash your hands frequently and try to avoid touching your eyes, nose, or mouth with your hands; Balanced diet, moderate exercise, and adequate rest; When experiencing symptoms such as fever and cough, try to avoid participating in group activities as much as possible, seek medical attention promptly, and wear a mask throughout the entire medical process. Pay attention to hand hygiene and food and water hygiene when dealing with food poisoning. When dining out, one should choose a formal and well maintained restaurant with good hygiene conditions. Try to eat cooked food, wash raw fruits and vegetables thoroughly, and avoid drinking raw water. Keep a good way of eating, try to adopt the serving of individual dishes, and advocate the use of male chopsticks and male spoons. Do not collect or consume unknown wild mushrooms and plants. Norovirus enteritis requires attention to hand hygiene, as well as food and water hygiene. During the period of illness until 3 days after recovery, infected individuals should try not to have close contact with others, especially not to prepare or process food, and not to take care of the elderly and infants. Patients should avoid sharing daily necessities such as dining utensils with others and try to use dedicated toilets or toilets. When ticks transmit diseases in the wild, personal protection should be taken. Tighten your pants legs or tuck them into socks or shoes. Wearing light colored clothes can make it easy to detect and remove ticks attached to your body. Do not wear sandals or hang clothes on grass or trees. Before entering indoors, carefully check to prevent ticks from being brought home through clothing or pets. Maintain good hand hygiene for hand, foot, and mouth disease. Avoid contact with sick children to prevent cross infection. Regularly clean and disinfect the surfaces of frequently touched items and children's toys. During the outbreak of hand, foot and mouth disease, it is not advisable to bring children to public places with crowded areas and poor air circulation. Vaccination with EV71 vaccine can effectively prevent hand, foot, and mouth disease caused by EV-A71 infection, and significantly reduce the occurrence of severe hand, foot, and mouth disease. Understand the knowledge of monkeypox prevention and control, enhance awareness of protection, and maintain good hygiene habits. Avoid close contact with patients or individuals with suspicious symptoms, and seek medical attention promptly if suspected symptoms occur. When traveling to areas with monkeypox outbreaks, it is important to understand the monkeypox situation in the destination in advance and take personal protective measures. Comply with relevant national regulations on entry and exit management, and cooperate in carrying out entry and exit quarantine. When returning/coming to China personnel experience symptoms such as rash, they should promptly seek medical attention and inform the attending doctor of their overseas travel history and suspected exposure history 21 days before the onset of the illness. Prevention of animal borne infectious diseases: Avoid entering the habitats of wild birds and other animals, and do not come into contact with or consume wild animals. Try to avoid direct contact with any animals, especially those of unknown origin; Do not eat undercooked animal products. When traveling to tropical and subtropical countries and regions, it is important to pay attention to preventing mosquito borne diseases such as dengue fever and malaria. Wear loose, light colored long sleeved tops and pants. Spray mosquito repellents containing effective ingredients such as DEET or insect repellent esters on the skin and clothing. When traveling, try to stay in hotels with air conditioning or screen windows. If there is no air conditioning or screen window, it is best to use mosquito coils or mosquito sprays, and use mosquito nets. When symptoms such as fever, chills, rash, and headache occur, seek medical attention promptly and explain your travel history. The characteristics of related risks and specific preventive measures The common symptoms of novel coronavirus infection with novel coronavirus are mainly fever, dry throat, sore throat, cough, etc. Some patients may be accompanied by muscle soreness, loss of smell and taste, nasal congestion, runny nose, diarrhea, conjunctivitis, etc. Elderly and immunocompromised individuals have a relatively higher risk of developing severe illness after infection. Main preventive measures: 1. Maintain good hygiene habits, cover your mouth and nose with tissues, towels, etc. when coughing or sneezing; Wash your hands frequently and try to avoid touching your eyes, nose, or mouth with your hands; Balanced diet, moderate exercise, adequate rest, etc. When experiencing symptoms such as fever and cough, try to avoid participating in group activities as much as possible, seek medical attention promptly, and wear a mask throughout the entire medical process. Food poisoning is most prevalent in China from May to October. During holidays, there is an increase in opportunities for dining together and dining out, which in turn increases the risk of food poisoning. Food poisoning caused by microorganisms is the most common in mainland China, and other types of poisoning such as those caused by wild bacteria and plants also occur from time to time. Food poisoning usually develops acute symptoms shortly after meals, including nausea, vomiting, abdominal pain, diarrhea, and other gastrointestinal symptoms. Main preventive measures: 1. Keep clean, wash hands frequently before and after meals, handling raw and cooked food and its packaging, coming into contact with pets, and disposing of garbage; Tableware and kitchen utensils should be rinsed with safe running water, dried, and regularly steamed and disinfected. The kitchen environment should be clean. Raw and cooked food should be separated, and kitchen utensils and containers used for processing food should be separated. 2. Use safe water and food ingredients, choose fresh vegetables and fruits, non moldy staple foods such as beans and peanuts, wash and peel appropriately to reduce risks; The entire process of food production should use safe water. 3. Food should be thoroughly cooked and burned through, and leftover food and overnight food should be heated thoroughly before being consumed again. Store food at a safe temperature, and store cooked food at room temperature for no more than 2 hours. Food that cannot be eaten in a timely manner should be refrigerated or frozen, and cooked food should be kept above 60 ℃ before consumption. 4. During travel and dining out, it is recommended to choose formal and hygienic restaurants, maintain good dining habits, try to use separate meals, advocate the use of public chopsticks and spoons, and reduce the risk of cross contamination. Do not consume food of unknown origin, do not collect or consume unknown wild mushrooms and plants. Norovirus enteritis outbreaks often occur in crowded places such as schools, kindergartens, hospitals, nursing homes, large cruise ships, and have also occurred on airplanes or in tour groups. The transmission routes include human to human transmission, food and water transmission, etc. The most common clinical symptoms are vomiting and diarrhea, followed by nausea, abdominal pain, headache, fever, chills, and muscle soreness. Most patients can recover within 2-3 days after onset. Very few cases may experience severe illness. Main preventive measures: 1. Pay attention to personal hygiene, especially hand hygiene. Wash with hand sanitizer or soap and running water for at least 20 seconds before meals, after going out and going home, taking care of patients, preparing or distributing food, and before meals. 2. Pay attention to food and water hygiene. When dining out, choose a regular restaurant with good hygiene conditions, try to eat cooked food, wash raw fruits and vegetables, and thoroughly cook oysters and other shellfish before eating; Do not drink raw water. 3. Norovirus infected individuals should take measures to prevent the spread of the virus to others within 3 days after recovery. They should avoid close contact with others, especially preparing and processing food, and should not take care of the elderly and infants. 4. Use chlorine containing disinfectants to disinfect the surfaces of pollutants such as vomit and excrement from patients, as well as the surfaces of contaminated environmental objects, daily use or contact with household items and utensils. When handling, gloves and masks should be worn. When the skin is contaminated, the pollutants should be immediately removed, then wiped and disinfected with 0.5% iodine for more than 3 minutes, and cleaned with clean water; Rinse the mucosa with a large amount of physiological saline or 0.1% iodine solution for disinfection. Ticks are the vectors of various infectious diseases and often transmit pathogens to humans through bites. In most parts of China, the period from April to September is when ticks are active, and the chances of people being bitten by ticks significantly increase. Ticks live in areas with dense grass, shrubs, or trees, as well as on animal surfaces. People may come into close contact with ticks while walking their dogs outdoors, camping, gardening, tea picking, farming, or hunting, and may also come into contact with ticks in yards or communities. Ticks often attach to the scalp, waist, armpits, groin, and ankle area of the human body. After absorbing enough blood, their bodies expand to the size of soybeans. Tick bites can cause symptoms such as allergies, ulcers, or inflammation, which are generally mild; However, some infectious diseases transmitted by ticks, such as fever with thrombocytopenia syndrome, have a higher risk of mortality. Diseases transmitted by ticks often have similar symptoms in the early stages, with fever and chills being the most common symptoms, followed by itching, headache, fatigue, and muscle soreness. Some may experience joint pain, rash, etc. Main preventive measures: 1. When engaging in outdoor activities, take personal protective measures such as tightening pants legs or stuffing pants legs into socks or shoes. Wear light colored clothes to make it easy to detect and remove ticks attached to the body. Do not wear sandals, do not dry clothes on grass or trees, and carefully inspect before entering indoors to prevent ticks from being brought home through clothing or pets. 2. Once a tick is found attached to the skin, it should be removed as soon as possible. Alcohol can be sprayed onto the tick to relax or kill its head. Then, use clean, fine tipped tweezers to remove the tick, without pulling or forcefully, to avoid damaging the skin or leaving the tick's head inside. After removal, disinfect the area with iodine or alcohol and observe the body's condition at all times; If necessary, consult medical personnel in a timely manner. If symptoms such as fever, fatigue, and muscle soreness occur within a few weeks after being bitten, seek medical attention as soon as possible and inform the doctor of the relevant exposure history. Hand, foot and mouth disease is a common infectious disease caused by various intestinal virus infections, with a high incidence in infants and young children aged 5 years and below; Starting from the second half of March each year, the incidence of hand, foot and mouth disease will gradually increase, and from April to June, it will enter the peak season of spring and summer. The incubation period of hand, foot and mouth disease is 2-10 days, with an average of 3-5 days. The condition is usually mild, self limiting, and has a good prognosis. Complete recovery can be achieved after 7-10 days of illness. Most children present with fever, scattered blisters on the oral mucosa, and papules and blisters on the hands, feet, and buttocks as the main clinical manifestations, which may be accompanied by symptoms such as cough, runny nose, and loss of appetite. Some cases only present with rash or herpetic pharyngitis, while a few cases may have no rash or present with bullous like changes. A small number of patients may experience rapid deterioration of their condition, with serious complications affecting the brain, lungs, and heart. Cases and latent infections are the main sources of infection, with strong transmission within one week after onset. The transmission routes of enteroviruses are diverse and easy to achieve, mainly through direct contact with patients' herpetic fluid, nasopharyngeal secretions, saliva, feces, as well as contact with contaminated hands, towels, handkerchiefs, dental cups, toys, tableware, bottles, bedding and other items or environments; It can also be transmitted through the respiratory tract (coughing, sneezing, etc.); Drinking or consuming water and food contaminated with viruses can also lead to infection. Main preventive measures: 1. Maintain good hand hygiene. Children should wash their hands correctly with water and hand sanitizer or soap for at least 20 seconds after touching public goods, saliva and respiratory secretions, using the toilet, before eating, and before parents and caregivers process food, change diapers, or dispose of fecal contaminated items. 2. Avoid contact with sick children, avoid sharing utensils, towels, or other personal items with sick children, and prevent cross infection. 3. Maintain household hygiene, regularly ventilate the living room, and dry clothes and bedding frequently. Regularly clean and disinfect surfaces of frequently touched items (countertops, door handles) and children's toys. 4. Bottles, pacifiers for infants and young children, and meals for children