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.
Here are some of the amazing facts about the Japan earthquake and tsunami. 1  The earthquake shifted Earth on its axis of rotation by redistributing mass, like putting a dent in a spinning top. 2  More than 5,000 aftershocks hit Japan in the year after the earthquake, the largest a magnitude 7.9.