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Doctor insights on: How Long Do Objects Touched By A Tb Patient Remain Infectious

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How long do objects touched by a TB patient remain infectious?

How long do objects touched by a TB patient remain infectious?

Not by touch: Tb is not transmitted by touching, it spreads by airborne particles that people inhale. Mycobacterium, the causative agent of tb, is very resilient, and can survive a very long time outside the human body. ...Read more

Dr. Scott Lindquist
617 doctors shared insights

Mycobacterium Tuberculosis Infection (Definition)

Mycobacterium tuberculosis is an infectious organism that spreads by droplets coughed out by an infected person. Infection is established initially in lungs, but can spread within lungs & to other body parts, or can become latent, with reactivation occurring years to decades later. With effective treatment, it can be completely eliminated although drug resistant ...Read more


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If HIV positive blood was on a surface, could someone get infected if they touched it with an open wound? How long does HIV live for outside the body?

If HIV positive blood was on a surface, could someone get infected if they touched it with an open wound? How long does HIV live for outside the body?

Yes: But this would be extremely rare. Hiv will not survive long outside the body, but might if the blood has not yet dried up entirely. Why in heavens name would anybody touch somebody's blood on a surface with their own open wound? A very improbable scenario. But the answer to your question is that this is possible. ...Read more

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How long takes a person infected with ebola from contracting the disease until dies? If a person has a fever, is suspected to be infected with ebola?

How long takes a person infected with ebola from contracting the disease until dies? If a person has a fever, is suspected to be infected with ebola?

Ebola: A febrile person living in or traveling from Liberia, Guinea or Sierra Leone such raise index of suspicion. Nigeria had 20 local cases. US & Senegal had one travel case only.According to CDC, incubation period is 2 to 21 days with average of 8 to 10 days. Not everyone contracting Ebola dies. The length of time until death is significantly effective by supportive treatment that is given. Most die ...Read more

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How long can the herpes virus survive on plastic and be contagious to another person?

How long can the herpes virus survive on plastic and be contagious to another person?

Herpes Survival: The american college of obstetricians and gynecologists states that the herpes simplex virus may be able to live on surfaces for up to a few hours outside of the body. Be sure to cover any areas of broken skin that may allow a virus to enter your body. ...Read more

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I was diagnosed with bollous impetigo. How long can it survive on inanimate objects such as towels, clothes, or soap. I don't want to spread it.

I was diagnosed with bollous impetigo. How long can it survive on inanimate objects such as towels, clothes, or soap. I don't want to spread it.

Wash and clean: Staph can last for days on surfaces. Wash potentially contaminated clothing and towels and this usually clears the issue from these items. Clean surfaces with lysol disinfectant. ...Read more

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How long do objects touched by one with fever, runny nose remain infectious?

How long do objects touched by one with fever, runny nose remain infectious?

It Depends: Different infectious agents have different abilities to survive outside the body.It can be minutes to hours to days. So no "right" answer to this one! ...Read more

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For how long the scratch is capable of transmitting hiv I mean how long it takes to not contract hiv from infected blood?

For how long the scratch is capable of transmitting hiv I mean how long it takes to not contract hiv from infected blood?

Depends on moisture: HIV is a fragile virus. It needs moisture and warmth to survive. If the scratch from an HIV + person is new and has flowing blood then it is infectious. Question is, how long before it is not infection? My view of this is that if the blood is in any way moist, then its infectious. If it is completely dry and been that way for a while, unlikely to be infectious. ...Read more

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How plausible is it for HPV to be spread through non-sexual or proxy contact (one not washing hands properly someone touching door handle after them)?

How plausible is it for HPV to be spread through non-sexual or proxy contact (one not washing hands properly someone touching door handle after them)?

Not impossible but..: By far, genital hpv is more commonly and more easily transmitted via sex. Plus, certain strains have a higher affinity for certain types of skin cells. Infection requires contact between skin cells and live virus. The virus must attach to cell receptors and get into a cell. Direct contact, microtrauma to skin and high viral load all favor infection. Sex is better than door knobs for transmission. ...Read more

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How long does HIV virus remain dormant in a person's body?

How long does HIV virus remain dormant in a person's body?

Depends: It depends on what you mean by dormant. Blood tests are generally positive within a few weeks of infection, and many people develop temporary symptoms during acute infection. However, after recovery from acute infection, you may have no symptoms for many years. On average, it takes 10 years to progress to aids without treatment. ...Read more

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How long does a person with meningitis stay infectious?

How long does a person with meningitis stay infectious?

Depends on germs: If you have bacterial meningitis and you've been treated for at least 24 hours, you are no longer contagious. A person with viral meningitis may be contagious for 7-10 days after their symptoms first started. Cover your nose/mouth when you sneeze/cough. Avoid spread by washing hands a lot. Don't share spoons, forks, drinking straws, chapsticks, lip glosses/lipsticks. ...Read more

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About how long can a person with stage four liver cancer live if they are being fed through a g-tube, diaretics and being treated for a bad infect.

About how long can a person with stage four liver cancer live if they are being fed through a g-tube, diaretics and being treated for a bad infect.

Several months: Ability to survive advanced liver cancer when unable to take oral intake and requires treatment for bad infection depends on how the infection responds to newer antibodies and status of liver function. If severely jaundiced with high bilirubin then end stage liver function i imminent. If infection brought under control and jaundice absent, then effective chemo may be found. ...Read more

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If someone has hand, foot and mouth disease, how long will they be contagious?

If someone has hand, foot and mouth disease, how long will they be contagious?

Up to 1 month: The disease is most contagious during the first week of illness, but the virus may spread after the signs and symptoms have disappeared because it persists in fecal material for up to 1 month. [cdc: hand, foot, and mouth disease]. ...Read more

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How long would hantavirus live say in a 100 degree garage or on a animals fur if they killed a deer mouse? how easy is it to contract hantavirus?

Difficult: Mice are everywhere and the conditions under which folks seem to catch hantavirus are "primitive". A big dose of mouse excitement inhaled seems to be the big risk ...Read more

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How long can a skin virus remain contagious if it not attached to its host. In short can it live on cloths and doors and stuff? How long?

How long can a skin virus remain contagious if it not attached to its host. In short can it live on cloths and doors and stuff? How long?

Herpes? HPV?: The main "skin viruses" are herpes simplex virus (HSV1 and HSV2) and human papillomavirus (HPV, multiple types). These ever are transmitted only by intimate personal contact, i.e. sexually (including oral sex) and kissing (for HSV1 only). Whether and how long they survive in clothing, towels, sinks, doorknobs, toilet seats, etc is irrelevant and not well known. But it doesn't matter. ...Read more

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How long could HIV virus remain active in a person's body without manifesting itself?

How long could HIV virus remain active in a person's body without manifesting itself?

Depends on person: Hiv can be clinically "latent" (present but causing no symptoms) for periods of months to years with some people being infected for up to 8 to 10 years without serious symptoms. This period of time is unique to every person and depends upon other factors such as other illnesses, nutrition, baseline health, age, etc... People with "dormant" disease are still potentially infectious to others. ...Read more

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How long can infectious diseases live outside the body if in a needle?

How long can infectious diseases live outside the body if in a needle?

Likely not long.: In order to get infected this way, the disease would likely have been in some fluid that would be injected in the body quite rapidly, and at that time contaminate the needle. The needle would not be used again but discarded. Most needles are disposable now so they should be sterile before use. If in a needle, the disease would only live likely <1-20 min. As germs don't live long on metals, etc. ...Read more

Dr. Klaus d Lessnau
1,217 doctors shared insights

Tuberculosis (Definition)

A potentially serious infectious bacterial disease that mainly affects the lungs, but can ...Read more


Contagious (Definition)

One is able to transmit an infection to another by ...Read more