Is rocky mountain spotted fever contagious?

Only by tick bites. Rocky mountain spotted fever (rmsf) is a rickettsia (type of bacteria) infection transmitted by a tick bite (feeding > several hrs). Symptoms start in 1 week (2-14d range). The germ attacks the cells lining the small blood vessels in the body, causing multi-organ damage and maybe death. Very rarely, rmsf can be transmitted by a blood transfusion or accidental exposure in an infectious disease lab.

Related Questions

Prognosis for rocky mountain spotted fever

Depends. If treated with proper antibiotics in first 5 days of infection, prognosis is excellent for most. Delayed treatment severely increases risk of badness due to the damage to your small blood vessels. It is the most serious tick-borne illness the the USA. Oklahoma (no Rockies !) has the highest rates. Use DEET!!! Read more...

What are the tests for rocky mountain spotted fever?

Clinical. There isn't a reliable test earlier in the disease. Later skin biopsy & serology can confirm it diagnosis is based symptoms & probability from local prevalence. Signs & symptoms include fever, ha, joint & muscle pains +/- n/v . A maculopapular rash occurs (90% of time) between the third & fifth days of illness usually starting on the ankles. It is critical you're seen early if you suspect it. Read more...

Which is the insect that transmits rocky mountain spotted fever?

Arachnids! Technically "insects" do not transmit the bacteria (rickettsia rickettsii) resposible for rocky mountain spotted fever (rmsf). Ticks - which are technically related to spiders rather than insects - do transmit r. Rickettsi. The most common ticks are dog ticks. However a variety of ticks from around north & south america are capable of spreading rmsf including, although rarely, deer ticks. Read more...
A tick. The "american wood tick", "rocky mountain wood tick", and "brown dog tick" are the ticks that spread rmsf in the United States. Some people get rmsf but do not remember getting a tick bite. A person with symptoms of rmsf who has been in areas where ticks live, but does not recall a tick bite, may be started on antibiotic treatment while awaiting blood tests to confirm rmsf infection. Read more...
Certain ticks... Such as the dog tick and the wood tick are dermacentor ticks, common vectors of rmsf. These ticks are different from ixodes ticks that transmit lyme disease. For the most part, the female tick must feed for at least 24 hours for transmission of an infection to occur. Read more...

Does rocky mountain spotted fever cause a coma?

Yes. Rocky mountain spotted fever is a bacterial infection that causes damage throughout the body, including the central nervous system (brain and nerves). If untreated, it can lead to symptoms of nerve damage, brain damage, and sometimes coma and death. Read more...
In very severe cases. Rocky mountain spotted fever affects about 2000 people in the U.S. Every year. The common symptoms include: rash, fever, headache, nausea, vomiting, abdominal pain, muscle pain, red eyes, and lack of appetite. In severe cases there is damage of small blood vessels, which could lead to gangrene, kidney failure, heart failure, lethargy, confusion, seizures, coma, and death. Read more...

Can rocky mountain spotted fever be transmitted by semen?

It's transmitted. By tick bites, and i've never heard on anyone with ticks in their ejaculate. Sounds like a good b-grade horror movie -- in the genre of "snakes on a plane". Read more...
Nope. But it can be transmitted by getting a 4-hour hickey from a tick vector. Read more...

Could someone get rocky mountain spotted fever from a dog?

RMSF from ticks. Rocky Mountain spotted fever occurs in virtually every state of the U.S. It's actually quite a dangerous disease transmitted by ticks. Certainly a dog could carry a tick (Dermacentor species) that carry the bacteria. Early symptoms of RMSF are non-specific and include fever, nausea/vomiting, headache, feeling 'wiped out' etc. Only later does the rash come out - if feeling sick, see a doc. . Read more...