Science And Technology

 Article posted by :  Vinod kushwaha Stress is a feeling of emotional or physical tension. It can come from any event or thought that makes you feel frustrated, angry, or nervous. Stress is your body's reaction to a challenge or demand. In short bursts, stress can be positive, such as when it helps you avoid danger or meet a deadline. But when stress lasts for a long time, it may harm your health. Considerations Stress is a normal feeling. There are two main types of stress: Acute stress.  This is short-term stress that goes away quickly. You feel it when you slam on the brakes, have a fight with your partner, or ski down a steep slope. It helps you manage dangerous situations. It also occurs when you do something new or exciting. All people have acute stress at one time or another. Chronic stress.  This is stress that lasts for a longer period of time. You may have chronic stress if you have money problems, an unhappy marriage, or trouble at work. Any type of stress that goes on f

A new polio vaccine joins the fight to vanquish the paralyzing dise ase The modified vaccine seeks to end outbreaks in the Middle East and Africa A baby is vaccinated against polio in Mauritania in 2020V Vaccination campaigns have provided more than 10 billion doses of oral polio vaccine to nearly 3 billion children since 2000, preventing more than 13 million cases of polio, according to the World Health Organization. After decades of work and mass vaccination campaigns that have spared millions of children from paralysis, the world is close to wiping out polio. But a small number of outbreaks that have simmered in areas of low vaccination remain. And some happened after weakened virus in the oral polio vaccine, over time, moved around a community and regained the ability to cause disease. No other vaccines made with weakened live viruses have caused outbreaks of disease. To stamp out vaccine-derived polio outbreaks, the World Health Organization has granted  emergency use for a new po