Chickenpox

Varicella, better known as chickenpox, is a viral infection that causes a generalized and pruritic rash that progresses rapidly in three different stages. The rash usually appears first on the head, then on the trunk, and then the extremities; the highest concentration of lesions is on the trunk. Lesions also can occur on mucous membranes of the oropharynx, respiratory tract, vagina, conjunctiva, and the cornea. Chickenpox is very contagious. Chickenpox can lead to complications including cellulitis, sepsis, meningitis, encephalitis, and pneumonia. The highest complication rates occur in children less than one and older than 15 years of age. The chickenpox vaccine was licensed in the United Sates in 1995. The vaccine produces 70 – 90% prevention from infection and 90 – 100% prevention from serious disease. Prior to the vaccine, there was an average of 100 deaths a year due to chickenpox infections.

Chickenpox - Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/varicella.pdf

 

 

Diphtheria

Diphtheria is an acute, toxin-mediated disease caused by the bacterium Corynebacterium diphtheriae. The toxin produced at the site of the membrane is absorbed into the bloodstream and then distributed to the tissues of the body. The toxin is responsible for the major complications of myocarditis, causing cardiac arrhythmias, neuritis, causing paralysis, and can also cause low platelet counts (thrombocytopenia) and protein in the urine (proteinuria). The disease can involve almost mucous membrane causing a variety of symptoms based on the site affected such as exudates, bleeding, pallor, rapid pulse, stupor, coma and death. The overall case-fatality rate for diphtheria is 5%–10%, with higher death rates (up to 20%) among persons younger than 5 and older than 40 years of age. A diphtheria toxoid (vaccine) was developed around 1921 but was not widely used until the early 1930s. It was incorporated with tetanus toxoid and pertussis vaccine and became routinely used in the 1940s. Only 5 cases of diphtheria have been reported since 2000.

Diphtheria, Tetanus and Pertussis - Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/dip.pdf

 

 

Haemophilus Influenza Type B

Haemophilus Influenzae type b is a bacterial infection which was the leading cause of bacterial meningitis and other invasive bacterial disease among children younger than 5 years of age, prior to the inception of the Hib vaccine. The most common types of invasive disease are meningitis, epiglottitis, pneumonia, arthritis and cellulitis. In the early 1980s, it was estimated that about 20,000 cases occurred annually in the United States, primarily among children younger than 5 years of age. The peak occurrence of illness is 6 – 11 months of age. Complications include neurologic sequelae, hearing impairment and death. The fatality rate is 2 – 5%. The current polysaccharide conjugate Hib vaccine was established in 1987. Since licensure of the vaccine, the incidence of Hib invasive disease has decline 99%.

Haemophilus Influenza Type B - Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/hib.pdf

 

 

Hepatitis A

Hepatitis A Virus (HAV) is an infection that typically has an abrupt onset of fever, malaise, anorexia, nausea, abdominal discomfort, dark urine and jaundice. HAV infection is acquired primarily by the fecal-oral route by either person-to-person contact or ingestion of contaminated food or water. The likelihood of symptomatic illness from HAV infection is directly related to age. In children younger than 6 years of age, most (70%) infections are asymptomatic. In older children and adults, infection is usually symptomatic, with jaundice occurring in more than 70% of patients. Until 2004, hepatitis A was the most frequently reported type of hepatitis in the United States. It is highly endemic in some areas, particularly Central and South America, Africa, the Middle East, Asia, and the Western Pacific and most common in the Western United States. Hepatitis A can evolve into fulminant disease which causes 100 death per year. Since HAV vaccines were licensed in 1995 and 1996, the incidence of the illness has steadily declined. Universal vaccination for HAV was established in 2005.
Hepatitis A – Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/hepa.pdf

 

 

Hepatitis B

Hepatitis B Virus (HBV) infection is an established cause of acute and chronic hepatitis and cirrhosis. It is the cause of up to 80% of hepatocellular carcinomas, and is second only to tobacco among known human carcinogens. The World Health Organization estimates that more than 600,000 persons died worldwide in 2002 of hepatitis B-associated acute and chronic liver disease. HBV is characterized by the insidious onset of malaise, anorexia, nausea, vomiting, right upper quadrant abdominal pain, fever, headache, myalgias, skin rashes, arthralgias, arthritis, dark urine and jaundice. HBV causes complications through its chronic carrier state. The likelihood of acquiring the carrier state is increased the younger the infection occurs, particularly in infancy. The carrier state can lead to fulminant hepatitis B, cirrhosis, hepatocellular carcinoma, liver failure and death. About 200 to 300 Americans die of fulminant disease each year. HBV infecton is transmitted most commonly through blood and sexual contact. In 2001, there was an estimated 1 – 1.25 million carriers of chronic HBV. Recombinant hepatitis B vaccine was established in 1986 and the universal infant vaccination program in 1991.
Hepatitis B – Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/hepb.pdf

 

 

Human Papillomavirus

Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States. The clinical manifestations of HPV infection include anogenital warts, recurrent respiratory papillomatosis, cervical cancer precursors (cervical intraepithelial neoplasia), and cancers, including cervical, anal, vaginal, vulvar, penile, and some of the head and neck. HPV is transmitted by direct contact, usually sexual, with an infected person. Studies of newly acquired HPV infection demonstrate that infection occurs soon after onset of sexual activity. In a prospective study of college women, the cumulative incidence of infection was 40% by 24 months after first sexual intercourse. An estimated 79 million persons are infected, and an estimated 14 million new HPV infections occur annually with half of these in persons 15-24 years.. Up to 75% of new infections occur among persons 15–24 years of age. The two most common types of cervical cancer worldwide, squamous cell carcinoma followed by adenocarcinoma, are both caused by HPV. The CDC and National Cancer Institute’s United States Cancer Statistics Working Group reports that from 2005 through 2009 there were annual averages of 12,595 cases and 3,968 deaths due to cervical cancer. HPV is believed to be responsible for nearly all of these cases of cervical cancer. HPV types 16 and 18 are associated with 70% of these cancers. In addition to cervical cancer, HPV is believed to be responsible for 90% of anal cancers, 71% of vulvar, vaginal, or penile cancers, and 72% of oropharyngeal cancers. The first vaccine to prevent infection with four types of HPV was licensed in 2006.  The newest vaccine now prevents infection with nine types of HPV was licensed in 2015.
Human Papillomavirus – Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/hpv.pdf

 

 

Influenza

Influenza is a viral infection that has caused four pandemics over the last two centuries. There are an average of more than 200,000 hospitalizations per year are related to influenza. “Classic” influenza disease is characterized by the abrupt onset of fever, myalgias, sore throat, nonproductive cough, rhinorrhea and headache. The peak influenza season in the United States occurs most frequently in January and February but extends from December through April. The complications of influenza are pneumonia, Reye syndrome, myocarditis and death. Influenza vaccination is indicated universally for children and adolescents six months of age and older. It is highly recommended for high risk patients with chronic health conditions such as asthma, chronic lung disease, diabetes, sickle cell anemia, congenital heart disease, HIV and neuromuscular disorders. The first inactivated influenza vaccine was developed in the 1940s. The live attenuated influenza vaccine was approved for use in the United States in 2003.

Influenza – Vaccine Information Sheet
Intranasal Influenza – Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/flu.pdf

 

 

Measles

Measles is a viral infection characterized by fever, cough, coryza (runny nose), conjunctivitis and both an oral and a cutaneous rash. The World Health Organization estimates there were more than 30 million cases and 454,000 deaths from measles worldwide in 2004. The complications of measles include otitis media, pneumonia, encephalitis, seizures and death. Measles outbreaks in the United States occur in pockets due to low vaccination coverage and international travel as the disease is imported through travel. In 2011, CDC reported 16 outbreaks of measles and 220 measles cases, most of which were imported cases in unvaccinated persons. Among the U.S. measles cases in persons 16 months through 19 years reported in 2011, 62% were in persons not vaccinated for a nonmedical reason. The first measles vaccines were licensed in 1963. The incidence of measles decreased by more than 98% following licensure of the vaccine.

Measles, Mumps & Rubella – Vaccine Information Sheet

 

• Adapted from www.cdc.gov/vaccines/pubs/pinkbook/downloads/meas.pdf