yes, all people carry some form of TB or another. Most of the time it's dormant.
by being cough on by a person with the measles
Yes, it is possible to develop immunity to HSV-1 after being infected, but the level of immunity can vary from person to person.
It depends on what infectious disease it is. Usually to avoid being infected get vaccinated and stay away from crowded areas
No . Rheumatoid arthritis, (RA) is not infectious) The exact cause of RA is not known aside from it being a immune disorder. Where the body's immune system attacks tissue of the body mistakenly. there seems to be a genetic connection and women with the condition outnumber men 3 to1.
No, but the cold that sometimes leads to an ear infection is.
The only risk associated with being around a person infected with HIV would result from contact with their infected semen, blood, vaginal fluid or breast milk. Casual contact poses no risks.
A person infected with HIV is generally referred to as being HIV+ (positive.) Often times, it is shortened to just "positive."
Germs that spread from person to person to cause diseases are contagions.People who are then infected with the germ, only during the active phase of the germ's "life", are then referred to as being contagious.
In some cases, zoonotic diseases are transferred by direct contact with infected animals, much as being near an infected human can cause the spread of an infectious disease. Other diseases are spread by drinking water that contains the eggs of parasites.
Scabies is transmitted by being in close contact with an infected person. For example, sleeping in the same bed as an infected person or by skin-on-skin contact.
To clarify slightly, nowadays researchers and medical professionals refer to those infected with the Human Immunodeficiency Virus as being "HIV Positive." "AIDS" (Acquired Immunodeficiency Syndrome) refers to an HIV-positive person who displays symtoms. In short, there is normally a "transitional" stage between a non-infected person and a person with AIDS, that stage being the person who is infected but has yet to display any symptoms -- HIV-positive. The most striking difference between those with AIDS and those without is that the person with AIDS has a weakened (or "compromised") immune system, because the HI virus attacks the white blood cells that are key to the human body's defence against infection, cancers and other illnesses.
Someone who is HIV-positive is most infectious when infected bodily fluids are exposed. The four bodily fluids that contain the virus and can infect others arebloodsemenvaginal fluidbreast milkAny time these fluids are exposed to an uninfected person, the risk for transmitting the HIV virus exists.