Chickenpox
Chickenpox is a highly contagious viral infection that is easily spread through respiratory droplets or direct contact with the blisters of an infected person. It typically causes an itchy rash with fluid-filled blisters that eventually crust over. Complications of chickenpox can include bacterial infections of the skin, pneumonia, and encephalitis.
Shingles
Shingles, also known as herpes zoster, is caused by the reactivation of the varicella-zoster virus that causes chickenpox. It typically presents as a painful rash with blisters that often appear in a band or strip on one side of the body. Shingles can lead to complications such as postherpetic neuralgia, where pain persists long after the rash has healed.
Transmission
Both chickenpox and shingles are caused by the varicella-zoster virus and can be transmitted through direct contact with the fluid from the blisters of an infected person. The viruses can also be spread through respiratory droplets when an infected person coughs or sneezes.
Complications
Complications of chickenpox can include bacterial infections, pneumonia, encephalitis, and in severe cases, even death. Shingles can lead to complications such as postherpetic neuralgia, vision loss, and neurological problems. It is important to seek medical attention if you suspect you have either chickenpox or shingles.
Spread of the Disease
Incubation Period and Contagiousness

Highly Infectious Diseases
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Transmission Overview
Chickenpox is an extremely contagious disease caused by the varicella-zoster virus. It typically manifests in childhood with a combination of fever and an itchy rash. The virus can then remain dormant in the body and reappear later in life as shingles.
Shingles, in contrast, is less contagious and is primarily transmitted through direct contact with the fluid found in the blisters.
Modes of Transmission

Person-to-Person Spread
Chickenpox is easily transmitted through the air, with the virus traveling in saliva droplets released during breathing, coughing, or sneezing. Almost any contact with an individual suffering from chickenpox can result in infection.
On the other hand, shingles is less contagious and is mostly spread through coming into direct contact with the affected individual’s blisters.
Contaminated Objects
The virus has the ability to survive on surfaces, potentially leading to transmission if one touches contaminated objects.
Risk during Pregnancy and in Newborns
Chickenpox can be passed on to unborn babies during pregnancy, which can pose risks if the mother contracts the disease close to childbirth. Shingles, however, does not pose such risks during pregnancy.
Symptoms and Complications
Chickenpox
The disease is associated with symptoms like general malaise, high fever, and a widespread itchy rash with fluid-filled blisters. Severe cases are more likely to occur in newborns or individuals with compromised immune systems.
Possible Complications
- Additional bacterial infections
- Pneumonia, particularly dangerous for pregnant women
- Affection of the central nervous system
Shingles
Characterized by a localized painful rash, shingles can lead to complications such as nerve or brain inflammation.
If you are a part of the at-risk groups and have been in close contact with someone who has chickenpox, it is advisable to consult a doctor even if you are not experiencing any symptoms.
Your healthcare provider may recommend antibodies or antivirals to prevent or lessen the severity of the infection.
Chickenpox can be particularly dangerous for pregnant women and their babies, potentially leading to serious complications. The risk is even greater for expectant mothers and their infants if it is their first experience with chickenpox during pregnancy. In cases where chickenpox is contracted during pregnancy, it can result in severe chickenpox in the newborn.
For those planning to become pregnant, it is essential to follow pre-pregnancy advice, which includes considering vaccination before conception.
Diagnosing chickenpox involves a thorough examination by a doctor, discussions about recent exposure, and reviewing vaccination history. In some instances, confirming chickenpox may require testing fluid from blisters.
While there is no specific treatment for chickenpox, symptoms typically improve over time. To alleviate discomfort, lotions or antihistamines can be used to ease itching, and paracetamol can help reduce fever. Ensure to stay hydrated and rest adequately. In severe cases, your doctor may prescribe antiviral medications. Antibiotics are ineffective against chickenpox since it is caused by a virus, not bacteria.
Vaccination is the most effective way to prevent chickenpox, offering protection and aiding in faster recovery if infection occurs. The vaccine can be administered alone or in combination with other vaccines. Medical professionals assure that MMR vaccinations are safe and do not cause autism. Children can receive the vaccine for free under the National Immunisation Program Schedule.
For those who have never had chickenpox or been vaccinated, it is recommended to consult with a healthcare provider regarding vaccination. Vaccination is advised against during pregnancy or for those with weakened immune systems. Individuals working in childcare, aged care, or healthcare settings are strongly encouraged to get vaccinated due to increased exposure.
Children between 12 months and 14 years should receive a second varicella vaccine dose for added protection. Those aged 14 years or older should get two vaccine doses at least 4 weeks apart. One vaccine dose is provided free under the National Immunisation Program for specific groups. While vaccination is generally safe, some individuals may experience redness, rash, or mild fever as temporary side effects.
While complications from chickenpox are rare, they can be severe, such as skin infections or inflammation. If your blisters become infected, your doctor may prescribe antibiotics. If you are concerned about complications, discuss them with your doctor if diagnosed with chickenpox.
Visit the Department of Health Immunisation website for more information regarding immunisation in Australia. For additional insights on this topic, consult trusted information partners.
Chickenpox, also known as varicella, is a viral disease caused by the varicella-zoster virus. For further details, visit related websites.
Discover more about the highly contagious viral illness, chickenpox, caused by the varicella-zoster virus. Reputable health sources provide additional insights.
Find detailed information on chickenpox vaccines, eligibility, and vaccination locations. If eligible, you can receive the chickenpox vaccine free under the National Immunisation Program.
Varicella, commonly called chickenpox, is a significant viral infection. For more information, visit the National Centre for Immunisation Research and Surveillance (NCIRS) website.