There are scarier infections even than these. "As the larvae crawl out of the caterpillar, they actually cause the caterpillar to defend them (from predators)." "There are fly larvae that actually live inside caterpillars and eat their insides," Moore says. You are going to wait."īut they get nastier if you are a bug. "If you are a sexually transmitted disease, the chances are you are not going to kill somebody overnight," she says. Most successful parasites alter behavior just slightly, says Janice Moore, a biologist at Colorado State University who studies parasites. There’s no treatment, and rabies is almost 100 percent fatal.Īnd the parasite is common – a third of the world’s population is infected, by eating undercooked meat, touching infected cat feces and sometimes by eating unwashed vegetables. And once symptoms appear, it’s almost always too late to vaccinate. Infected bats can bite people who are sleeping or otherwise unaware, and victims and their doctors may not suspect rabies when they eventually do become ill because the time between the bite and symptoms can be so long.
IPHONE X WORLD WAR Z BACKGROUNDS MOVIE
In both the book and the movie "World War Z," experts at first believe the zombie virus is rabies – which is indeed transmitted through bites or through organ transplants and which can make some animals highly aggressive and sensitive to sound.īut while the movie depicts infection taking hold in an unrealistic 12 seconds, rabies can be scarier because it can take months to show symptoms. Of course, plenty of scary diseases already exist.
WHO and other health experts caution that a more deadly pandemic could disrupt international trade and cause shortages in food, fuel and medicines if countries closed borders or had to shut down critical operations to prevent spread. Its descendant, the H1N1 swine flu, killed more than 280,000 people in 2009 – and that was a mild pandemic. Flu viruses often do – in 1918, the H1N1 flu killed or helped kill anywhere between 50 million and 100 million people. But again, after some careful health diplomacy, Saudi officials invited an international team of scientists to investigate MERS, which has infected 64 people and killed 38 of them.Īny of these viruses could cause a pandemic.
Similarly, there was some suspicion that Saudi Arabia wasn’t being completely open about an ongoing outbreak of a new virus called MERS, for Middle East associated respiratory syndrome.
Perhaps due to years of public health diplomacy, Chinese officials have been widely praised for sharing information about the current outbreak of H7N9 bird flu, which the World Health Organization says has infected more than 130 people and killed at least 37 of them. Something similar really happened in 2002, with the severe acute respiratory syndrome (SARS) virus, which eventually spread to the rest of the world, killed more than 770 people and infecting close to 8,000 before it was stopped.Ĭhinese officials were accused of being less than honest about the outbreak, which was doubly worrying because scientists were already twitchy at the time about H5N1 bird flu. It’s no mistake the film suggests the zombiefying virus starts in China.
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