How is smallpox different from chickenpox?

How is smallpox different from chickenpox?

Doctors can tell chickenpox and smallpox apart. While they may look similar to the untrained eye, smallpox rashes are different: Chickenpox sores show up at different times in different areas. They’re mostly on the stomach, chest, and back, and rarely on the palms or the soles of your feet.

What is Rickettsia pox?

Rickettsialpox is a mild, self-limiting disease caused by the bacterial organism Rickettsia akari . It is transmitted by the bite of an infected mouse mite ( Liponyssoides sanguineus ). Primarily an urban disease, it was first discovered in New York City in 1946.

What is the difference between smallpox and cowpox?

Cowpox is similar to, but much milder than, the highly contagious and often deadly smallpox disease. Its close resemblance to the mild form of smallpox and the observation that dairy farmers were immune to smallpox inspired the modern smallpox vaccine, created and administered by English physician Edward Jenner.

How was smallpox eradicated?

Thanks to the success of vaccination, the last natural outbreak of smallpox in the United States occurred in 1949. In 1980, the World Health Assembly declared smallpox eradicated (eliminated), and no cases of naturally occurring smallpox have happened since.

What pathogen cause Rickettsia disease?

Rickettsial infections are caused by multiple bacteria from the order Rickettsiales and genera Rickettsia, Anaplasma, Ehrlichia, Neorickettsia, Neoehrlichia, and Orientia (Table 4-19). Rickettsia spp.

How are Rickettsia like viruses?

Unlike viruses, Rickettsia possess true cell walls and are similar to other gram-negative bacteria. Despite a similar name, Rickettsia bacteria do not cause rickets, which is a result of vitamin D deficiency. Figure: A Microbe versus Animal Cell: The large spheres are tick cells.

Why is smallpox called smallpox?

Smallpox is an acute contagious disease caused by the variola virus. It gets its name from the Latin word for “spotted,” referring to the raised, pustular bumps that break out over the face and body of those affected.