Rabies: 1. infectious viral disease that causes acute inflammation of the brain; almost always fatal in non-vaccinated people after neurological symptoms have developed; symptoms include: involuntary throat contraction, convulsions, paralysis; 2. acute infectious, often fatal, viral disease of most warm-blooded animals, especially wolves, cats, and dogs; attacks the central nervous system; transmitted by the bite of infected animals. wścieklizna

Race-specific mortality rate: mortality rate limited to a specified racial group; both numerator and denominator are limited to the specified group. współczynnik umieralności w obrębie danej rasy

Racial and ethnic health disparities: differences in disease rates by race/ethnicity. There are very few diseases for which those differences result from biological factors, e.g. sickle cell anaemia in people of African descent. Differentials in other diseases can usually be traced to socio-economic phenomena, e.g. access to health care, economic issues, and discrimination. rasowe/etniczne nierówności/dysproporcje zdrowotne

Radiation: energy transmitted by waves through space or some medium. There are two types of radiation: ionising, e.g. X-rays or radiation from a radioactive device, and non-ionising, e.g. infra-red, ultra-violet radiation. promieniowanie

Radiation protection standard: limits on radiation exposure regarded as necessary for protection of public health, based on acceptable levels of risk to individuals. normy ochrony przed promieniowaniem

Radioactive decay: spontaneous change in an atom by emission of charged particles and/ or gamma rays; also known as radioactive disintegration and radioactivity. rozpad radioaktywny

Radioactive waste: any waste that emits energy as rays, waves, or streams of energetic particles; often mixed with other hazardous waste, usually from nuclear reactors, research institutions, or hospitals.