- What really caused polio?
- Why did milkmaids not get smallpox?
- Is it still possible to get polio?
- When did they stop giving polio vaccine?
- Can a baby be born with polio?
- Why does polio affect the legs?
- Who cured smallpox?
- Can you be naturally immune to smallpox?
- Is polio more contagious than smallpox?
- What is polio called today?
- Does polio have another name?
- Does smallpox still exist?
- Does smallpox cause polio?
- What animal did polio come from?
- Is polio a man made disease?
What really caused polio?
What causes polio.
Polio is caused by the poliovirus.
The virus enters the body through the mouth.
It is spread through contact with the feces (stool) of an infected person or through exposure to phlegm or mucus when an infected person coughs or sneezes..
Why did milkmaids not get smallpox?
Jenner, a physician and scientist, noticed that milkmaids generally didn’t develop smallpox, a disfiguring and sometimes deadly disease. He guessed it was because they sometimes caught cowpox, a related disease that only caused mild illness in people.
Is it still possible to get polio?
Polio does still exist, although polio cases have decreased by over 99% since 1988, from an estimated more than 350 000 cases to 22 reported cases in 2017.
When did they stop giving polio vaccine?
OPV was recommended for use in the United States for almost 40 years, from 1963 until 2000. The results have been miraculous: Polio was eliminated from the United States in 1979 and from the Western Hemisphere in 1991. Since 2000, only IPV is recommended to prevent polio in the United States.
Can a baby be born with polio?
During pregnancy there is an increased susceptibility to poliomyelitis. In spite of this the incidence of polio virus infections causing disease in the fetus or in the new- born child is small [l]. A number of cases reported, however, have been strongly sug- gestive of an intra-uterine infection with polio virus.
Why does polio affect the legs?
These nerve cells cannot regenerate, and the affected muscles lose their function due to a lack of nervous enervation – a condition known as acute flaccid paralysis (AFP). Typically, in patients with poliomyelitis muscles of the legs are affected more often than the arm muscles.
Who cured smallpox?
Edward Jenner (Figure 1) is well known around the world for his innovative contribution to immunization and the ultimate eradication of smallpox (2).
Can you be naturally immune to smallpox?
An interesting observation during the smallpox scourge was that people who survived natural smallpox developed life-long immunity against the disease, but immunity following vaccination begins to wane in vaccine recipients 3–5 years after vaccination, even though the majority of vaccine recipients retain some level of …
Is polio more contagious than smallpox?
Polio is transmitted fecal-orally. It can get into water systems so it’s much easier to transmit than smallpox and has the potential to be much more widespread.
What is polio called today?
Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus.
Does polio have another name?
Note that “poliomyelitis” (or “polio” for short) is defined as the paralytic disease. So only people with the paralytic infection are considered to have the disease.
Does smallpox still exist?
Currently, there is no evidence of naturally occurring smallpox transmission anywhere in the world. Although a worldwide immunization program eradicated smallpox disease decades ago, small quantities of smallpox virus officially still exist in two research laboratories in Atlanta, Georgia, and in Russia.
Does smallpox cause polio?
Like smallpox, polio is a disease that only affects humans, and we have an effective vaccine for it. In fact, we have two. But neither is as good as the one for smallpox, and one of them — a live virus vaccine no longer used in the U.S. — has the potential to mutate and cause vaccine-derived polio.
What animal did polio come from?
The discovery by Karl Landsteiner and Erwin Popper in 1908 that polio was caused by a virus, a discovery made by inoculating macaque monkeys with an extract of nervous tissue from polio victims that was shown to be free of other infectious agents.
Is polio a man made disease?
No, says Wimmer. “Polio is a very simple virus,” he tells WebMD. “The smallpox virus is much, much larger, and to put it together from scratch right now is almost impossible. Smallpox could not be re-created now, but maybe in 20-30 years when technology is more advanced.