65% increase in chickenpox cases in the capital of Sao Paulo – 12/14/2022

Compared to 2021 information, the quantity of cases of smallpox, the standard identify for chickenpox, in the metropolis of São Paulo elevated by 65% ​​in 2022.

In whole, there have been 213 confirmed cases of an infection with the varicella-zoster virus, which causes the illness, and 56 outbreaks by way of October (when cases out of the blue increase). In 2021, there have been 129 cases of chickenpox in São Paulo. The information is from a metropolis corridor survey.

Marcio Nehab, a pediatric infectologist at the Fernández Figueira National Institute of Women, Children and Adolescents’ Health (IFF/Fiocruz), factors to low vaccination protection towards chickenpox as the primary cause for the increase in the illness.

Today, the tetraviral vaccine, which protects towards the illness, has protection of lower than 50% of the nationwide goal inhabitants, in line with an evaluation by Observe Infencia (Feocruz/Uniface). So, right now, the physician assesses that “it’s important that individuals replace their youngsters’s vaccination playing cards as quickly as attainable and hold youngsters away from colleges, if they’ve signs”.

In Brazil, the most affected by the illness are youngsters and the unvaccinated. That’s as a result of, by catching the illness as soon as – which often occurs in childhood, since the virus is very contagious and circulates simply in day care facilities and colleges -, an individual turns into immune.

“The chance of getting smallpox is twice, however, particularly for vaccinated folks, it is rather small and the individual will in all probability have few lesions”, explains the infectologist.

Tetraviral (SCR-V) is on the market by way of the National Immunization Program (PNI) and protects towards chickenpox, mumps, measles and rubella.

It must be used in two doses: one at 15 months of age and one other at 4 years of age. According to Fiocruz, chargeable for the nationwide manufacturing of the immunizer, the first dose of the vaccine already ensures 85% safety towards chickenpox and with the second, the safety is 97%.

Thus, if contaminated with the virus, the signs are gentle and don’t develop right into a severe situation that requires hospitalization. In addition to tetraviral, there may be additionally a preventive vaccine that may be taken by individuals who have had latest contact with contaminated folks, which is obtainable in the Unified Health System (SUS).


The commonest signs of chickenpox are a purple rash or blisters on the physique, itching, low to reasonable fever that lasts a median of 4 days, malaise, fatigue, headache and loss of urge for food.

They often begin between 10 and 21 days after an infection.

A correct prognosis of the illness is important in line with the physician. “One ought to discover a well being submit or a non-public hospital”, he says.

Usually, the illness is identified after a medical examination. However, since chickenpox has related signs to mpox (the new identify for monkeypox), serological testing is important in some cases to verify the illness and acquire applicable indications for therapy.

In basic, there isn’t any particular therapy for chickenpox. Infectologists advocate being cautious with pores and skin hygiene, washing it often with cleaning soap and water.

In addition, it is very important trim the nails nicely and to not scratch the wound, as this will increase the danger of secondary bacterial an infection.

If the affected person has fever, the use of acetylsalicylic acid must be prevented, as it could result in problems.

In extreme cases of the illness, the use of a drug referred to as acyclovir could also be prescribed, however this is dependent upon the medical analysis. It can also be vital to isolate the affected person for seven days after pores and skin lesions seem, to keep away from transmission.


Natalie Del-Vecchio, pediatric infectologist and coordinator of the Hospital Infection Control Commission (CCIH) at IFF/Fiocruz, warns of the significance of avoiding an infection and never underestimating the illness.

“In the previous, many individuals inspired youngsters to catch chickenpox, in order that adults wouldn’t undergo from the illness. But like different ailments, chickenpox can develop right into a severe type and result in demise even in wholesome youngsters”, says the physician. .

In some cases, it’s attainable that chickenpox results in severe secondary infections, which may trigger encephalitis, for instance, which is an inflammatory illness of the central nervous system that may result in demise. “If the baby has not been vaccinated at the indicated age and the vaccine is overdue, dad and mom can and may nonetheless take them to the well being middle.”

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