A Titer is a blood test that checks your immune status to vaccinations or diseases you may have received in the past. There are two types of immunity a person can have: 1. Titers are blood tests that check your immune status to vaccinations or diseases you may have received in the past. 2  If youâre titers results are positive, it means that you have adequate immunity to a particular infectious disease.
All rights reserved. More from OurAmazingPlanet. VANCOUVER, British Columbia â In 2011, Japan was one of the most prepared countries in the world for a massive earthquake. Yet when a mega-quake hit Japan last March, sparking a huge tsunami, it was shockingly devastating.
How does the earthquake compare with others? This was the sixth largest earthquake in the world since 1900, when seismological records began. The most devastating earthquake to strike Japan was in 1923, when a magnitude 7.9 tremor devastated Tokyo and Yokohama and killed an estimated 142,800 people. The Kobe earthquake in 1995 was a magnitude 6.9 and caused more than 5,000 deaths and injured 36,000 others. The earthquake that wrecked Christchurch in New Zealand last month was a magnitude 6.3 event. Around 30 times more energy is released as the magnitude of an earthquake increases one unit, for example from magnitude 8 to 9. Why is the area so prone to earthquakes? The Pacific plate moves fast in tectonic terms, at a rate of 9cm (3.5 inches) a year.