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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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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Autumn has been a difficult season for San Diego, thanks to a large hepatitis A outbreak.

The outbreak was officially declared a local public health emergency by the San Diego Public Health Officer on September 1, 2017. The outbreak progressed and spread to nearby areas like Los Angeles and Santa Cruz. This prompted California Governor Jerry Brown to officially declare a state of emergency on October 13.

Hepatitis A is a virus spread through contaminated food and water. This usually occurs when the food or water is polluted with the fecal matter of someone who’s infected.

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