Swine influenza is a respiratory disease of pigs caused by the swine influenza A virus, which can cause influenza outbreaks in pig populations. Normally, humans are rarely infected with swine influenza virus. In recent years, human cases of swine influenza have been reported in the United States and elsewhere, mostly in people who have had direct contact with sick pigs. People may become infected with swine influenza through contact with infected pigs or contact with an environment infected with swine influenza virus, or through contact with a person infected with swine influenza virus. The symptoms of human swine flu infection are similar to those of ordinary human flu, including fever, cough, sore throat, body aches, headache, chills and fatigue, etc. Some people also experience diarrhea and vomiting, and in severe cases, pneumonia and respiratory failure, and even death. I. Swine flu and its deadly danger: Swine flu is a kind of swine respiratory disease caused by swine flu virus type A. The virus can cause flu outbreaks in swine herds. Normally humans are rarely infected with swine influenza virus. In recent years, there have been cases of human swine influenza infection in the United States and other places, and most of the patients were people who had direct contact with sick pigs. People may become infected with swine influenza through contact with infected pigs or contact with an environment infected with swine influenza virus, or through contact with a person infected with swine influenza virus. The symptoms of human swine flu infection are similar to those of ordinary human flu, including fever, cough, sore throat, body aches, headache, chills and fatigue, etc. Some people also have diarrhea and vomiting, and in severe cases, pneumonia and respiratory failure, and even death. Prevention and treatment There is no vaccine for swine flu. There is no evidence that swine flu can be transmitted through food. Therefore, it is safe to consume properly handled cooked pork and pork products. Cooking pork to an internal temperature of 71°C will kill bacteria and viruses. The correct practice is to develop good personal hygiene habits, wash your hands regularly, especially after touching public objects, and then touch your eyes, nose and mouth; you should cover your mouth and nose with tissues when sneezing and coughing; keep ventilation indoors, etc. C. How to strengthen the prevention of the disease for people leaving and returning to the United States Currently, the human swine flu outbreak is known to have occurred in three states in the United States: California, Texas and Kansas, as well as the Mexican capital of Mexico City (FederalDistrict, Mexico City), the southeast of Oaxaca (Oaxaca), the central (SanLuisPotosi) and the northern Mexicali (Mexicali) and Baja California (BajaCalifornia) and other five municipalities. Chinese citizens are advised to be aware of the progress of the epidemic and to take personal precautions when traveling to these areas for business and pleasure. Travel agencies are responsible for informing tour members of the epidemic and reminding them to take personal precautions when organizing tours to these areas. The main personal protection measures are: 1. Avoid contact with patients with flu-like symptoms (fever, cough, runny nose, etc.) or pneumonia and other respiratory illnesses; 2. 6.If influenza-like symptoms (fever, cough, runny nose, etc.) appear outside the country, seek medical attention immediately (wear a mask when seeking medical attention) and explain to the local public health agency and inspection and quarantine department. When returning home from the above-mentioned areas, if influenza-like symptoms (fever, cough, runny, etc.) appear, you should take the initiative to explain to the entry-exit inspection and quarantine agencies.