Parents put immunocompromised child at risk by not vaccinating sibling

Chickenpox, or Varicella zoster, is a common childhood disease that can result in fairly serious complications such as encephalitis, pneumonia, sepsis, hemorrhagic varicella, and death. Individuals at especially high risk from complications from varicella are immunocompromised, usually from some sort of immunodeficiency or immunosuppression (usually pharmaceutical treatments for cancers or autoimmune diseases). For immunocompromised individuals, it is important that any individuals around them should be vaccinated against common childhood diseases, whether chickenpox or other diseases (mumps, rubella, etc.), because the chances of transmitting these diseases is extremely high and the risk of complications are serious.

The Centers for Disease Control and Prevention reported that a 3 year old Minnesota girl, who was receiving immunosuppressive therapy for juvenile rheumatoid arthritis, was admitted to a hospital after 2 days of a high fever of 102.7°F (39.3°C) and extensive rash, including in her mouth and throat. Neither she nor her younger sibling received the first dose of varicella vaccine (recommended at 12-15 months) because their parents refused the vaccinations as a result of personal beliefs. The child eventually recovered as a result of treatment with intravenous acyclovir (which has more serious potential side effects than the imagined ones for the vaccine). Continue reading “Parents put immunocompromised child at risk by not vaccinating sibling”

Chicken vaccine viruses recombine in wild, anti-vaccine conspiracies abound

For the past five years, there have been large outbreaks of infectious laryngotracheitis (ILT) in chickens in Australia. ILT is a highly contagious herpesvirus, and one of a group that includes herpes and chickenpox. The chickens become very ill with red and swollen eyes, along with sneezing, coughing and gasping, while occasionally producing a bloody nasal discharge. Mortality is quite high, and surviving chickens produce fewer eggs, which, of course, is very bad for chicken farmers.

The diseases are usually prevented by a vaccine against ILT. Many vaccines against viruses, including the ILT version, contain live attenuated viruses (LAV), which are viruses that have reduced virulence, though still alive, so that the immune system recognizes it to develop an immune response. Attenuation takes an infectious agent and alters it so that it becomes harmless or less virulent. Continue reading “Chicken vaccine viruses recombine in wild, anti-vaccine conspiracies abound”

Maryland proposes new vaccine requirements for students

The Baltimore Sun is reporting that Maryland is proposing revised vaccination regulations that would require incoming kindergartners to receive a chicken pox booster vaccination (varicella vaccine). It is also requiring seventh graders to get a booster against tetanus, diphtheria and pertussis, (DTaP vaccine). In addition, Maryland also wants to include a vaccine against Meningococcus, a bacterium that causes meningitismeningococcemiasepticemia, and rarely carditisseptic arthritis, or pneumonia. The state also wants to increase the requirement for the number of MMR vaccinations for measles, mumps and rubella.

If the proposed changes go into effect, Maryland would be aligned with standards recommended by the Centers for Disease Control and Prevention’s National Advisory Committee on Immunization Practices. To this date, 36 states have adopted such standards. The new guidelines, if adopted, would to into effect in 2014.

According to David Bundy, an assistant professor of pediatrics and childhood adolescence at the Johns Hopkins Children’s Center,

The recommendations for these immunizations are not new nationally, this is just updating the state’s requirement to reflect the existing recommendations. It just makes us all look like we’re in alignment with what we’re doing, and it tightens the safety net at schools for kids who may be missing vaccines.

I’m sure the anti-vaccine crowd will be complaining soon.

via Maryland proposes additional pertussis, chicken pox booster requirement | Vaccine News Daily.

Chickenpox outbreak in Florida

According to Vaccine News Daily, Chickenpox spreads to five Fla. public schools, the chickenpox (Varicella zoster) outbreak in Florida is increasing in size:

Health officials in Florida added 25 students who are not vaccinated against chickenpox to a list of those barred from attending class in five public schools in High Springs and Alachua on Wednesday.

There have been 65 cases of chickenpox reported in the northwest part of Alachua County, prompting the health department to prohibit unvaccinated students from attending the Alachua Learning Center.

Continue reading “Chickenpox outbreak in Florida”