Mumps

What Is Mumps?

Mumps is a contagious illness caused by a virus that can result in fever and swelling of the neck. During the prevaccine era, nearly everyone in the United States experienced it, and 90 percent of cases occurred among children under 15 years of age. Today, there are fewer than a thousand cases each year in the United States.

 

What Causes Mumps?

The mumps cause is an infection with the mumps virus. This virus is an RNA (ribonucleic acid) virus from the family Paramyxovirus of the genus Rubulavirus. The virus only infects humans, and it is found worldwide.

 

How Is the Virus Transmitted?

The mumps virus resides in the mucus in the nose and throat of the infected person, along with the saliva. When that person sneezes or coughs, droplets spray into the air. The infected mucus can land in other people's noses or throats when they breathe or put their fingers in their mouth, nose, or eyes after handling an infected surface.

Incubation Period

When a person becomes infected with the mumps virus, it begins to multiply within the nose, throat, and lymph glands in the neck. The virus can also enter the blood and spread to other parts of the body. After 16 to 18 days, on average, symptoms can appear. This period between transmission and the start of symptoms is the "incubation period for mumps." In some cases, the incubation period can be as early as 12 days or as late as 25 days.

Contagious Period

A person with mumps is contagious anytime from about three days prior to the onset of the swelling of the salivary glands (called parotitis) to nine days after the onset. A person can spread the disease if he or she becomes infected with the virus, even if symptoms never develop.

 

Symptoms of Mumps

Mumps symptoms can include:

• Fever
• Headache
• Muscle aches
• Tiredness
• Loss of appetite
• Sore throat
• Chills
• Swelling of salivary glands (the parotid salivary glands, which are located within your cheek, near your jawline, and below your ears, are most frequently affected). 
• 

• Treating Mumps: An Overview

  There is currently no treatment for mumps that can kill the mumps virus. Because mumps is caused by a virus, antibiotics or other medications for mumps are not effective. Therefore, treatment focuses on providing relief from symptoms as the body fights the virus. This is called supportive care. Supportive care can include:
   
• Medications (such as acetaminophen or ibuprofen) to control fever or pain
• Warm, moist towels to help with swelling
• Fluids
• Rest until the fever improves
• Soft, bland diet.
   

After about one to two weeks, mumps symptoms should have faded. However, in some cases, complications of mumps can develop after the original symptoms have improved.

 

Visiting the Doctor for Mumps Treatment

If you become very ill due to the mumps or from complications associated with it, you should seek medical attention as soon as possible. In addition, it's a good idea to call the doctor in advance so that you don't have to sit in the waiting room for a long time and possibly infect other patients.

 

Mumps Prognosis

Most people recover from mumps without any long-term problems. In rare cases, long-term problems, including deafness, can result. Unfortunately, there is no treatment for mumps that can prevent related complications.

Mumps Prevention Through the Mumps Vaccine

Mumps prevention begins with the mumps vaccine. The vaccine contains live, attenuated (weakened) mumps virus. In the United States, the vaccine is licensed and available as a single preparation (Mumpsvax^®) or combined with both live attenuated measles and rubella vaccine (MMR vaccine, also known as measles, mumps, rubella vaccine). Typically, mumps vaccine in the United States is administered as the MMR vaccine

source:http://mumps.emedtv.com/mumps

          http://www.free-health-care.com/throat_problems/mumps.htm

 

R A B I E S

Key facts

• Rabies occurs in more than 150 countries and territories.
• Worldwide, more than 55 000 people die of rabies every year.
• 40% of people who are bitten by suspect rabid animals are children under 15 years of age.
• Dogs are the source of 99% of human rabies deaths.
• Wound cleansing and immunization within a few hours after contact with a suspect rabid animal can prevent the onset of rabies and death.
• Every year, more than 15 million people worldwide receive a post-exposure preventive regimen to avert the disease – this is estimated to prevent 327 000 rabies deaths annually.

---

Rabies is a zoonotic disease (a disease that is transmitted to humans from animals) that is caused by a virus. The disease infects domestic and wild animals, and is spread to people through close contact with infected saliva via bites or scratches.
Rabies is present on all continents with the exception of Antartica, but more than 95% of human deaths occur in Asia and Africa. Once symptoms of the disease develop, rabies is nearly always fatal.

Symptoms

The incubation period for rabies is typically 1–3 months, but may vary from <1 week to >1 year. The initial symptoms of rabies are fever and often pain or an unusual or unexplained tingling, pricking or burning sensation (paraesthesia) at the wound site.
As the virus spreads through the central nervous system, progressive, fatal inflammation of the brain and spinal cord develops.
Two forms of the disease can follow. People with furious rabies exhibit signs of hyperactivity, excited behaviour, hydrophobia and sometimes aerophobia. After a few days, death occurs by cardio-respiratory arrest.
Paralytic rabies accounts for about 30% of the total number of human cases. This form of rabies runs a less dramatic and usually longer course than the furious form. The muscles gradually become paralyzed, starting at the site of the bite or scratch. A coma slowly develops, and eventually death occurs. The paralytic form of rabies is often misdiagnosed, contributing to the underreporting of the disease.

Patient with rabies, 1959

Diagnosis

No tests are available to diagnose rabies infection in humans before the onset of clinical disease, and unless the rabies-specific signs of hydrophobia or aerophobia are present, the clinical diagnosis may be difficult. Post mortem, the standard diagnostic technique is to detect rabies virus antigen in brain tissue by fluorescent antibody test.

Transmission

People are infected through the skin following a bite or scratch by an infected animal. Dogs are the main host and transmitter of rabies. They are the source of infection in all of the estimated 55 000 human rabies deaths annually in Asia and Africa.
Bats are the source of most human rabies deaths in the United States of America and Canada. Bat rabies has also recently emerged as a public health threat in Australia, Latin America and western Europe. Human deaths following exposure to foxes, raccoons, skunks, jackals, mongooses and other wild carnivore host species are very rare.
Transmission can also occur when infectious material – usually saliva – comes into direct contact with human mucosa or fresh skin wounds. Human-to-human transmission by bite is theoretically possible but has never been confirmed.
Rarely, rabies may be contracted by inhalation of virus-containing aerosol or via transplantation of an infected organ. Ingestion of raw meat or other tissues from animals infected with rabies is not a source of human infection.

Treatment after exposure

Effective treatment soon (within a few days, but as soon as possible) after exposure to rabies can prevent the onset of symptoms and death.
Post-exposure prevention consists of local treatment of the wound, administration of rabies immunoglobulin (if indicated), and immediate vaccination.

Local treatment of the wound

Removing the rabies virus at the site of the infection by chemical or physical means is an effective means of protection. Therefore, prompt local treatment of all bite wounds and scratches that may be contaminated with rabies virus is important. Recommended first-aid procedures include immediate and thorough flushing and washing of the wound for a minimum of 15 minutes with soap and water, detergent, povidone iodine or other substances that kill the rabies virus.

Recommended treatment

The recommended post-exposure prophylaxis depends on the type of contact with the suspected rabid animal (see table).

Table: Recommended post-exposure prophylaxis for rabies infection
Category of exposure to suspect rabid animal	Post-exposure measures
Category I – touching or feeding animals, licks on intact skin (i.e. no exposure)	None
Category II – nibbling of uncovered skin, minor scratches or abrasions without bleeding	Immediate vaccination and local treatment of the wound
Category III – single or multiple transdermal bites or scratches, licks on broken skin; contamination of mucous membrane with saliva from licks, exposures to bats.	Immediate vaccination and administration of rabies immunoglobulin; local treatment of the wound

Other factors that should be taken into consideration when deciding whether to initiate post-exposure prevention include:

• the likelihood of the implicated animal being rabid
• the clinical features of the animal and its availability for observation and laboratory testing.

In developing countries, the vaccination status of the suspected animal alone should not be considered when deciding whether to initiate prophylaxis or not.

Who is most at risk?

Dog rabies potentially threatens over 3.3 billion people in Asia and Africa. People most at risk live in rural areas where human vaccines and immunoglobulin are not readily available or accessible.
Poor people are at a higher risk, as the average cost of rabies post-exposure prophylaxis after contact with a suspected rabid animal is US$ 40 in Africa and US$ 49 in Asia, where the average daily income is about US$ 1–2 per person. In India, 20 000 rabies deaths (that is, about 2/100 000 population at risk) are estimated to occur annually; in Africa, the corresponding figure is 24 000 (about 4/100 000 population at risk).
Although all age groups are susceptible, rabies is most common in children aged under 15; on average 40 % of post-exposure prophylaxis regimens are given to children aged 5–14 years, and the majority are male.
Anyone in continual, frequent or increased danger of exposure to rabies virus – either by nature of their residence or occupation – is also at risk. Travellers with extensive outdoor exposure in rural high-risk areas where immediate access to appropriate medical care may be limited should be considered at risk regardless of duration of their stay. Children living in or visiting rabies-affected areas are at particular risk.

Prevention

Eliminating rabies in dogs

Rabies is a vaccine-preventable disease. The most cost-effective strategy for preventing rabies in people is by eliminating rabies in dogs through vaccination. Vaccination of animals (mostly dogs) has reduced the number of human (and animal) rabies cases in several countries, particularly in Latin America. However, recent increases in human rabies deaths in parts of Africa, Asia and Latin America suggest that rabies is re-emerging as a serious public health issue.
Preventing human rabies through control of domestic dog rabies is a realistic goal for large parts of Africa and Asia, and is justified financially by the future savings of discontinuing post-exposure prophylaxis for people.

Preventive immunization in people

Safe, effective vaccines also exist for human use. Pre-exposure immunization in people is recommended for travellers to high-risk areas in rabies-affected countries, and for people in certain high-risk occupations such as laboratory workers dealing with live rabies virus and other lyssaviruses, and veterinarians and animal handlers in rabies-affected areas. As children are at particular risk, their immunization could be considered if living in or visiting high risk areas.

source: http://www.who.int/mediacentre/factsheets/fs099/en/