Liquid - Introduction. 1  Liquid is one of the four primary states of matter, with the others being solid, gas and plasma. 2  A liquid, like a gas, displays the properties of a fluid. 3  Liquid particles are bound firmly but not rigidly.
Thailand Vaccinations. While shots are not required for people from major industrialized countries like the U.S. and UK, unless the traveler is arriving from a country for which inoculations are required. Many people recommend the following: 1  Up-to-date hepatitis, typhoid, tetanus and polio.
Vaccinations Needed for Travel to Africa A yellow fever vaccination is the only medical shot travelers need to enter South Africa, according to the U.S. Department of State. This requirement applies only to travelers who are entering South Africa from countries where yellow fever is endemic. However, there are other health risks to tourists to South Africa, such as malaria and HIV.