With so many options in the world today, thanks to ride-sharing apps like Uber and Lyft, transportation while traveling can be much easier than it used to be.

There is no longer a need to rely on the word of locals or maps. An app or navigation system can take care of many transportation worries.

But, with all these options it can also be hard to tell which is the best for you. The answer to that question can largely depend upon where you’re traveling; for example, if you’re in a rural setting, public transportation may not be an option at all. This can narrow down your choices, but it still remains a tricky choice for travelers when they are planning trips abroad.

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Everyone is familiar with the immunity created for many illnesses. Viruses like smallpox and chickenpox build an immunity with antibodies after a first infection.

But what about diseases that actually come back worse the second time?

Research on dengue fever, published in 2017, has people considering the idea with more evidence than before.

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The Marburg virus is relatively new on the scene.

It was discovered in 1967 and named after one of the leading cities where the illness broke out, Marburg, Germany. There was a simultaneous epidemic in Frankfurt, Germany, as well as in Belgrade, Yugoslavia, which is modern-day Serbia.

In its early years, the virus was commonly called the Marburg Hemorrhagic Fever. While Marburg may be new to many, the world is already familiar with its cousin virus, Ebola.

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Infecting hundreds of millions across the globe, HPV is the world’s most common sexually transmitted disease. In the United States alone, human papillomavirus infects 14 million new people every year.

While the numbers are alarming, HPV is usually symptomless. It’s the long-term effects of this disease that can create life-threatening issues.

Years of untreated HPV can change the cells in a woman’s cervix, leading to cervical cancer. While cervical cancer is still a rare development from HPV, 70 percent of the cancer cases can be traced to the disease.

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The bubonic plague, also known as the “Black Death,” is one of the most dangerous diseases known to man.

It struck Europe in the mid-fourteenth century and overran the continent for over 300 years. Many of the European nations heard that Asia and the far East had substantial outbreaks of “Black Death.” Europe had established amicable trade relations with many of these Asian nations.

Historians believe that the plague was brought to Messina, Italy via trade ships.

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