How Do You Get Hepatitis C
Hepatitis C is a blood-borne illness, meaning it is transmitted via contact with infected blood. Usually the virus enters the body through a puncture wound on the skin. The most common way hepatitis C is transmitted is via injection drug use. Sharing dirty needles with someone who is infected can transmit hepatitis C. Health care professionals may contract the virus via needlestick injury. Prior to 1992, the U.S. blood supply was not screened the way it is today, so some people contracted hepatitis C from infected blood transfusions. Rarely, babies born to hepatitis C-infected mothers acquire the virus. Hepatitis C can also be spread by having sex with an infected person or sharing personal items with someone who has the virus, but these cases are rare.
Causes Of Hepatitis A
Hepatitis A is caused by a virus. The virus can survive for several hours outside the body but persists on the hands and in food for even longer. It is resistant to heating and freezing.
The virus is spread when it enters the mouth, which can happen when hands, foods or other items are contaminated with the faeces of a person with hepatitis A. The disease can also be spread sexually by oral or anal contact.
A person with hepatitis A is infectious from 2 weeks before they show symptoms to one week after they become jaundiced .
If an infected person has no jaundice, they may pass on the virus until 2 weeks after they first have symptoms . Caution is advised beyond this period as the virus can be shed in stools for longer periods.
Acute Vs Chronic Hepatitis C Infection
Acute hepatitis C infection refers to symptoms that appear within 6 months of newly acquiring the virus. About 20% to 30% of those who acquire hepatitis C experience acute illness. After this, the body either clears the virus or goes on to develop chronic infection. Chronic hepatitis C infection refers to long-lasting infection. The majority of people who have acute hepatitis C infection go on to develop the chronic form of the illness.
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History And Physical Exam
To diagnose hepatitis, first your doctor will take your history to determine any risk factors you may have for infectious or noninfectious hepatitis.
During a physical examination, your doctor may press down gently on your abdomen to see if theres pain or tenderness. Your doctor may also feel to see if your liver is enlarged. If your skin or eyes are yellow, your doctor will note this during the exam.
Pregnancy And Hepatitis A Immunisation
Hepatitis A immunisation is not usually recommended for women who are pregnant although vaccination might be recommended in some situations.
Speak with your doctor if you are not immune to hepatitis A and you are at increased risk of infection or if you have a pre-existing medical condition such as liver disease.
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Membranes And Reverse Osmosis
Membranes can also be used to separate ethanol and water. Membrane-based separations are not subject to the limitations of the water-ethanol azeotrope because the separations are not based on vapor-liquid equilibria. Membranes are often used in the so-called hybrid membrane distillation process. This process uses a pre-concentration distillation column as the first separating step. The further separation is then accomplished with a membrane operated either in vapor permeation or pervaporation mode. Vapor permeation uses a vapor membrane feed and pervaporation uses a liquid membrane feed.
Managing Injection Site Discomfort
Many vaccine injections may result in soreness, redness, itching, swelling or burning at the injection site for one to 2 days. Paracetamol might be required to ease the discomfort. Sometimes a small, hard lump at the injection site may persist for some weeks or months. This should not be of concern and requires no treatment.
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Hepatitis C And Liver Transplantation
Some people with advanced hepatitis C infection and severe liver damage undergo a liver transplant, but that doesn’t eradicate the infection. Patients with active infection at the time of the transplant will develop hepatitis C in the new liver. Sometimes the infection recurs even when patients are on antiviral treatment. Those who have achieved sustained virologic response – meaning no detectable virus in the blood 6 months after treatment – have a very low risk of developing hepatitis C infection in the new liver.
The Symptoms Are General
Since the liver has a part in so many essential functions, many symptoms are constitutional, meaning they affect the entire body. For example, a sore leg will usually just hurt in and around the leg. With hepatitis, you may feel pain around the liver, but you will also probably have chills and aches in your joints and muscles.
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Side Effects Of Immunisation Against Hepatitis A
Immunisations against hepatitis A are effective and safe. All medications can have side effects.
For most people, the chance of a serious side effect from a vaccine is much lower than the chance of serious harm if you catch the disease.
Common side effects from the hepatitis A vaccine include:
- localised pain, redness and swelling at the injection site
- low-grade temperature
Willowbrook State School Experiments
A New York University researcher named Saul Krugman continued this research into the 1950s and 1960s, most infamously with his experiments on mentally disabled children at the Willowbrook State School in New York, a crowded urban facility where hepatitis infections were highly endemic to the student body. Krugman injected students with gamma globulin, a type of antibody. After observing the temporary protection against infection this antibody provided, he then tried injected live hepatitis virus into students. Krugman also controversially took feces from infected students, blended it into milkshakes, and fed it to newly admitted children.
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How Long Does It Last
Hepatitis A can last from a few weeks to several months.
Hepatitis B can range from a mild illness, lasting a few weeks, to a serious, life-long condition. More than 90% of unimmunized infants who get infected develop a chronic infection, but 6%10% of older children and adults who get infected develop chronic hepatitis B.
Hepatitis C can range from a mild illness, lasting a few weeks, to a serious, life-long infection. Most people who get infected with the hepatitis C virus develop chronic hepatitis C.
Who Are Hepatitis B Carriers
Hepatitis B carriers are people who have the hepatitis B virus in their blood, even though they dont feel sick. Between 6% and 10% of those people whove been infected with the virus will become carriers and can infect others without knowing it. There are over 250 million people in the world who are carriers of HBV, with about 10% to 15% of the total located in India. Children are at the highest risk of becoming carriers. About 9 in 10 babies infected at birth become HBV carriers, and about half of children who are infected between birth and age 5 carry the virus. A blood test can tell you if you are a hepatitis B carrier.
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How Is Hepatitis B Prevented
Testing & Vaccination
- The hepatitis B vaccine offers excellent protection against HBV. The vaccine is safe and highly effective. Vaccination consists of 3 doses of vaccine over the course of 6 months. Protection lasts for 20 years to life.
- The American Academy of Pediatrics recommends that all children should receive hepatitis B vaccine starting at birth. .
- The CDC recommends hepatitis B vaccine for persons traveling to countries where HBV is common .
- If you have one or more risk factors for hepatitis B infection, you should get a simple HBV blood test. The blood test will determine whether you are:
- immune to hepatitis B or
- susceptible to hepatitis B and need vaccination or
- infected with hepatitis B and need further evaluation by a physician
- California law requires testing of all pregnant women for hepatitis B infection
- If the mother is HBV-infected, she will pass the infection to the baby during the birth process, unless the baby gets immunized within hours of birth
- Giving the infant HBIG and HBV vaccine right away will reliably prevent infection of the infant
- Other family members should best tested for hepatitis B too, and given vaccine if they are not already infected or immune
After Exposure to Hepatitis B
Tests To Diagnose Hepatitis C
How is Hepatitis C diagnosed?
There are two main blood tests typically used to diagnose Hepatitis C. First, youll have a screening test that shows if youve ever had Hepatitis C at some point in your life. If this test is positive, youll have a second test to see if you have Hepatitis C now. These blood tests are described below:
Hepatitis C antibody test
This is the screening test used by doctors to show whether or not you have ever been exposed to Hepatitis C at some time in your life, by detecting antibodies in your blood. Antibodies are substances your body makes to fight off all kinds of infections. If you were ever infected with Hepatitis C, your body would have made antibodies to fight the virus.
If the test result is:
- Negative, it means you have not been exposed to Hepatitis C and further testing is usually not needed.
- Positive, you have had Hepatitis C at some point. However, it does not tell you whether you have it now. Youll need to see your doctor for another test the Hepatitis C RNA test to determine if the virus is still active and present in your blood.
Hepatitis C RNA Qualitative Test
This test will determine whether or not you are currently infected with Hepatitis C. It is often called the PCR test because of the process used . It looks for the genetic material of the Hepatitis C virus in your blood.
If the test result is:
Hepatitis C RNA Quantitative Test
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General Signs And Symptoms Of Hepatitis C
As mentioned, many cases of hepatitis C infection often go unnoticed because they donât always present symptoms. If you do present symptoms, they manifest about four to 12 weeks after initial exposure to the virus. Symptoms can also vary between acute and chronic forms of the infection. Acute hepatitis C symptoms may include:
- Pain in your abdomen
- Nausea and/or vomiting
Chronic hepatitis C infections can remain dormant for years, and it usually isnât apparent until the virus has caused significant damage to the liver.
What Do You Do If You Become Ill
Talk to your health care provider about getting tested if you think you:
- are at risk
- may have hepatitis C
If you have hepatitis C, tell those who may have been exposed to your blood or bodily fluids. They should get tested and be treated if necessary. Bodily fluids, like semen and vaginal fluid, are a concern because they could be carrying small amounts of infected blood.
Some adults with hepatitis C will recover from the disease on their own within 6 months. Until your health care provider confirms your recovery status, you are still contagious and can spread the disease.
After recovery, you are no longer contagious because you will not have the disease anymore. But you can get hepatitis C again.
Unfortunately, most adults with hepatitis C:
- cannot recover on their own
- develop a more serious form of the disease if they are sick for longer than 6 months
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What The Cdc Recommends
Were you born between 1945 and 1965? If so, then youre a member of the Hepatitis C generation. The CDC recently recommended that all people born between during this time have a 1-time screening test for Hepatitis C. We now have new drugs that can treat and cure Hepatitis C so you should go get tested today.
The life you save may be your own! Please contact your local healthcare provider.
What Are The Symptoms Of Chronic Hepatitis B
About 1 in 20 people who get hepatitis B as adults become carriers, which means they have a chronic hepatitis B infection. Carriers are more likely to pass hepatitis B to other people. Most carriers are contagious meaning they can spread hepatitis B for the rest of their lives.
Hepatitis B infections that last a long time may lead to serious liver diseases like cirrhosis and liver cancer. About 1 in 5 people with chronic hepatitis B die from it. There are medicines that can help treat chronic hepatitis B infections.
Most babies who get hepatitis B develop chronic infection, unless they get treated right away. But treatments almost always work if your baby gets them quickly. Thats why its important for pregnant people to get tested for hepatitis B.
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Who Should Be Vaccinated For Hepatitis B
All newborns should be vaccinated. Also, people who are under 18 who were not vaccinated at birth should also get the vaccine. Other groups who should be sure to be vaccinated are those in certain high-risk categories, such as:
- People who have more than one sexual partner.
- Men who have sex with men.
- Adults with diabetes.
- Sexual partners of infected people and people who share households with infected individuals.
- People who are exposed to blood and other bodily fluids, including healthcare and public safety professionals, and people who work in jails and other places taking care of people who cant take care of themselves.
How Is Hepatitis B Treated
Your healthcare provider will treat you based on what type of hepatitis B you have, acute or chronic.
Acute hepatitis B infections
If you develop an acute form of the condition, you probably wont need medical treatment. Instead, your doctor will likely suggest that you get plenty of rest, drink lots of fluids and maintain a healthy diet to support your body as it fights off the infection.
Chronic hepatitis B infections
If you have chronic hepatitis B, you might be a candidate for drug therapy. Usually, drug therapy is used only if you have active liver disease. There are seven drugs that are approved by the U.S. Food and Drug Administration to treat hepatitis B. Two are injectable forms of interferon, while the five other antivirals are tablets.
You will need to take these medications every day. They help by slowing the viruss ability to multiply in your system. This helps reduce swelling and liver damage. Youll need to be regularly monitored for early signs of liver damage and liver cancer. Your healthcare provider will want to see you once or twice a year.
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Abnormalities In Heme Metabolism And Excretion
One way to understand jaundice pathophysiology is to organize it into disorders that cause increased bilirubin production or decreased bilirubin excretion .
Prehepatic jaundice is attributed to a pathological increase in bilirubin production. The pathophysiology is quite simple an increased rate of erythrocyte hemolysis increased bilirubin production increased deposition of bilirubin in mucosal tissue appearance of yellow hue.
Hepatic jaundice is due to significant damage to liver function hepatic cell death and necrosis occur impaired bilirubin transport across hepatocytes. Bilirubin transport across may be impaired at any point between hepatocellular uptake of unconjugated bilirubin and hepatocellular transport of conjugated bilirubin into the gallbladder. In addition, subsequent cellular due to inflammation causes mechanical obstruction of intrahepatic biliary tract. Most commonly, interferences in all three major steps of bilirubin metabolism uptake, conjugation, and excretion usually occur in hepatocellular jaundice. Thus, an abnormal rise in both unconjugated and conjugated bilirubin will be present. Because excretion is usually impaired to the greatest extent, conjugated hyperbilirubinemia predominates.
Laboratory findings depend on the cause of jaundice:
How Do Doctors Treat Hepatitis C
Doctors treat hepatitis C with antiviral medicines that attack the virus and can cure the disease in most cases.
Several newer medicines, called direct-acting antiviral medicines, have been approved to treat hepatitis C since 2013. Studies show that these medicines can cure chronic hepatitis C in most people with this disease. These medicines can also cure acute hepatitis C. In some cases, doctors recommend waiting to see if an acute infection becomes chronic before starting treatment.
Your doctor may prescribe one or more of these newer, direct-acting antiviral medicines to treat hepatitis C:
You may need to take medicines for 8 to 24 weeks to cure hepatitis C. Your doctor will prescribe medicines and recommend a length of treatment based on
- which hepatitis C genotype you have
- how much liver damage you have
- whether you have been treated for hepatitis C in the past
Your doctor may order blood tests during and after your treatment. Blood tests can show whether the treatment is working. Hepatitis C medicines cure the infection in most people who complete treatment.
Hepatitis C medicines may cause side effects. Talk with your doctor about the side effects of treatment. Check with your doctor before taking any other prescription or over-the-counter medicines.
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Role In Human Disease
Examples of common human diseases caused by viruses include the , influenza, , and . Many serious diseases such as , , , , and are caused by viruses. The relative ability of viruses to cause disease is described in terms of . Other diseases are under investigation to discover if they have a virus as the causative agent, such as the possible connection between and neurological diseases such as and . There is controversy over whether the , previously thought to cause diseases in horses, could be responsible for illnesses in humans.
Viruses have different mechanisms by which they produce disease in an organism, which depends largely on the viral species. Mechanisms at the cellular level primarily include cell lysis, the breaking open and subsequent death of the cell. In , if enough cells die, the whole organism will start to suffer the effects. Although viruses cause disruption of healthy , resulting in disease, they may exist relatively harmlessly within an organism. An example would include the ability of the , which causes cold sores, to remain in a dormant state within the human body. This is called latency and is a characteristic of the herpes viruses, including EpsteinâBarr virus, which causes glandular fever, and , which causes chickenpox and . Most people have been infected with at least one of these types of herpes virus. These latent viruses might sometimes be beneficial, as the presence of the virus can increase immunity against bacterial pathogens, such as .