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(more about Power Words)
average (in science) Term meaning the arithmetic mean, which is the sum of a group of numbers which is then divided by the size of the group.
contagious An adjective for a disease that can spread through direct contact with an infected individual or the germs it spreads in the air, its clothes or its environment. These diseases are described as contagious.
Ebola A family of viruses that cause a deadly disease in humans. All cases are from Africa. Symptoms include headache, fever, muscle aches and heavy bleeding. The infection is transmitted from one person to another (or from one animal to another person) through contact with infected body fluids. The disease takes its name from the place where the infection was discovered in 1976 – communities close to the Ebola River in what was then called Zaire (and who is now the Democratic Republic of Congo).
emerging infectious disease A disease that has suddenly begun to infect an increasing number of people or other organisms and could increase dramatically, even more in the near future.
environment The sum of all the things that exist around an organism or process and the condition that these things create. The environment can refer to the weather and the ecosystem in which an animal lives, or perhaps to the temperature and humidity (or even placement of objects nearby). of an object of interest).
epidemic Generalized epidemic of an infectious disease that infects several people (or other organisms) simultaneously in the same community. The term may also be applied to non-infectious diseases or conditions that have spread in a similar manner.
epidemiologist Like health detectives, these researchers determine what causes a particular disease and how to limit its spread.
postman Something that plays a role in a particular condition or event; a contributor.
herd immunity A term that refers to the idea that if most members of a population are immune to a disease, they can not transmit it. This tends to protect most non-immune people.
immune (adj.) relating to immunity. (v.) Able to ward off a particular infection. Alternatively, this term can be used to mean that an organism shows no impact of exposure to a particular poison or process. More generally, the term may indicate that something can not be hurt by a particular drug, disease or chemical.
immune system The collection of cells and their responses help the body fight infections and treat foreign substances that can cause allergies.
immunity The ability of an organism to resist a particular infection or poison by providing cells to kill, kill or disarm the dangerous substance or infectious germ. Or, used colloquially, it means the ability to avoid another type of adverse impact (such as dismissal from a job or bullying).
infect (Adj. infectious) To transmit a disease from one organism to another. This usually involves the introduction of some kind of germ causing disease in an individual.
measles A very contagious disease, usually affecting children. Symptoms include a characteristic skin rash, headache, runny nose and cough. Some people also develop pinkeye, swelling of the brain (which can cause brain damage), and pneumonia. The last two complications can lead to death. Fortunately, since the mid-1960s, there has been a vaccine that significantly reduces the risk of infection.
release The sudden emergence of the disease in a population of people or animals. The term can also apply to the sudden emergence of devastating natural phenomena, such as earthquakes or tornadoes.
population (in biology) A group of individuals of the same species living in the same area.
interval The full extent or distribution of something. For example, the range of a plant or animal is its natural surface. (in mathematics or for measurements) The extent to which variation of values is possible. In addition, the distance in which something can be reached or perceived.
report The relationship between two numbers or amounts. When they are written, the numbers are usually separated by two dots, for example 50:50. This would mean that for 50 units of one thing (left), there would also be 50 units of something else (represented by the number on the right).
strain (in biology) Organisms belonging to the same species sharing small but definable characteristics. For example, biologists select certain strains of mice that may be particularly susceptible to disease. Some bacteria or viruses can develop one or more mutations that turn them into a strain that is immune to the usually lethal effect of one or more drugs.
threshold A lower limit; or the lowest level at which something happens.
transmission Something that is transmitted or sent. (in mechanics) In a liquid fuel vehicle, machines are used to transfer power from the engine to the drive wheels. (In medicine) To spread a disease or a toxic agent.
vaccine (v. vaccinate) Biological mixture that looks like a pathogen. It is given to help the body create immunity against a particular disease. The injections used to administer most vaccines are called vaccinations.
variable (in mathematics) A letter used in a mathematical expression that can take different values. (experimentally) A factor that can be modified, especially a factor allowed in a scientific experiment. For example, when researchers measure the amount of insecticide needed to kill a fly, they can change the dose or age at which the insect is exposed. Dose and age would be variables in this experiment.
virus Tiny infectious particles consisting of RNA or DNA surrounded by proteins. Viruses can only reproduce by injecting their genetic material into the cells of living creatures. Although scientists often consider viruses as living or dead, no virus is actually alive. He does not eat like animals or does not eat as plants do. To survive, he must divert the cellular machinery from a living cell.
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