Keyword: Virology

ARCHAEOGENETICS

Did diseases kill the Neanderthals?

Sequences detected in the genome of the extinct species represent the oldest documented human viral infections

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VIROLOGY

Study identifies how the Chikungunya virus causes death

Infectious agent causes dysregulated metabolism and inflammation in multiple organs, including the brain

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COVID-19

Even after being destroyed, the COVID-19 virus wreaks havoc

Even when broken apart by the human immune system, the SARS-CoV-2 virus still causes excessive inflammation

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Interview

2024 could become the year with the highest number of dengue cases

FAMERP virologist Maurício Nogueira discusses the characteristics of the current epidemic and the need for the health system to prepare for more patients

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Epidemiology

Thousands of dead pups

Outbreak of the H5N1 avian flu virus devastates southern elephant seal populations

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Immunology

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

Cutaneous leishmaniasis may be aggravated by viral and bacterial coinfections

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Genetics

Chikungunya virus caused seven outbreaks in Brazil in 10 years

The agent that causes the disease has already been identified in 60% of municipalities

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Epidemiology

Bird flu on the Galápagos Islands

H5N1 virus detected in samples from birds found dead in the Galápagos Islands

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GENETICS

Avian flu virus spreading across Brazil came from the coast of Chile or Peru

Pathogen obtained from a dead bird in Espírito Santo is genetically similar to the one circulating in the two neighboring South American countries

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BIOLOGY

Yellow fever virus has been circulating uninterrupted in southern Brazil for seven years

The disease vector arrived in the country’s southeast two to three years earlier than previously thought

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EPIDEMIOLOGY

Falls in uptake of the MMR vaccine occurred at different rates between 2006 and 2020

The declines were greater in poorer municipalities and more intense during the economic crisis and the beginning of the COVID-19 pandemic

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VIROLOGY

Mayaro virus causes swelling of the skin, muscles, and joints

In tests on rodents, the pathogen multiplied quickly and affected other organs

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INTELLECTUAL PROPERTY

Obstacles to innovation

Knowledge about Zika and Chikungunya resulted in several patents, but few products within public reach

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COVID-19

Setbacks in coronavirus drug development

Health agencies are suspending the use of drugs that have lost efficacy against circulating variants of SARS-CoV-2

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Biology

Giant viruses released from thawing ground

Viruses come back to life after lying dormant in the icy ground for millennia

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Immunology

Antibodies defeat yellow fever in animals

Rodents and monkeys given an infusion of the compounds were able to survive infection

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Microbiology

Viruses that infect insects increase the ability of Aedes aegypti to transmit diseases to humans

Mosquitoes infected with both PCLV and HTV are three times more likely to carry the dengue virus

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Oncology

Vaccine candidate designed to treat cancer caused by HPV

In experiments on rodents, vaccine formulations eliminated tumors and rid the animals of the disease for a long time

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Epidemiology

Mpox in children may signal infection risk in other population groups

One in every four people infected by Mpox in Sergipe is under 18 years of age

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Infectious diseases

Antibody neutralizes Zika in preclinical trials

A superpotent immunoglobulin M antibody stopped the virus in animal tests

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Health

The spread of monkeypox

Cases worldwide increased 20% in one week; Brazil is the country with the third-highest number of infections

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MEDICINE

The resurgence of the Sabiá virus

Two new cases of Brazilian hemorrhagic fever, caused by the Sabiá virus, have been identified

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Public health

Number of unvaccinated children rises

Brazil was one of the countries most affected by falling childhood vaccination in 2021

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COVID-19

Brazilian networks keep a close eye on coronavirus variants

SARS-CoV-2 genomic surveillance in the country backed by funding from British government program

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MEDICINE

Children with Congenital Zika Syndrome suffer developmental delays in motor, cognitive, and language skills

Neurological damage caused by the virus impairs the ability to move, learn, and talk

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COVID-19

Anti-coronavirus semiconductors

Nanotechnological materials emerge as promising alternatives in the battle against SARS-CoV-2 and future pandemics

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INTERVIEW

Margareth Dalcolmo: Pandemic scars

The physician-researcher discusses the difficulties faced by health professionals dealing with Covid-19, the dramatic struggles of patients she attended, and the likelihood of an increase in tuberculosis cases in the coming years

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COVID-19

With fewer cases and deaths, the pandemic could be entering a new phase

Incidence of the disease appears to be becoming more predictable

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Public health

Polio returns to Africa

In late March, four African countries announced a mass vaccination campaign against polio

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INFECTIOUS DISEASES

A long-sought cure may be closer

Experimental treatment able to control HIV for six months after stopping antiretrovirals

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