Tuesday November 19, 2019

Cervical Cancer Vaccines Show Major Impact on Stopping Infections

Britain’s GSK makes an HPV vaccine called Cervarix that targets two strains of the virus

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vaccine preventable diseases
WHO projects fewer children in Africa are likely to receive life-saving vaccines in the coming decades. VOA

Vaccination against the virus that causes almost all cervical cancer is having a major impact on stopping infections and should significantly reduce cases of the disease within a decade, researchers said Wednesday.

Presenting results of an international analysis covering 60 million people in high-income countries, scientists from Britain and Canada said they found “strong evidence” that vaccination against the human papillomavirus (HPV) works “to prevent cervical cancer in real-world settings.”

“We’re seeing everything that we’d want to see. We’re seeing reductions in the key HPV infections that cause most cervical disease, and we’re seeing reductions in cervical disease,” said David Mesher, principal scientist at Public Health England, who worked on the research team.

Marc Brisson, a specialist in infectious disease health economics at Canada’s Laval University who co-led the study, said the results suggested “we should be seeing substantial reductions in cervical cancer in the next 10 years.”m

Cervical Cancer, Vaccines, Infections
Vaccination against the virus that causes almost all cervical cancer is having a major impact. Pixabay

Vaccines in 100 countries

HPV vaccines were first licensed in 2007 and have since been adopted in at least 100 countries worldwide. Britain’s GSK makes an HPV vaccine called Cervarix that targets two strains of the virus, while Merck makes a rival shot, Gardasil, which targets nine strains.

In countries with HPV immunization programs, the vaccines are usually offered to girls before they become sexually active to protect against cervical and other HPV-related cancers.

Brisson’s team gathered data on 60 million people over eight years from 65 separate studies conducted in 14 countries and pooled it to assess the vaccines’ impact.m

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They found that the two HPV types that cause 70% of cervical cancers, known as HPV 16 and HPV 18, were significantly reduced after vaccination, with an 83% decline in infections in girls ages 13 to 19 and a 66% drop in women ages 20 to 24 after five to eight years of vaccination.

Figures released in February by the World Health Organization’s International Agency for Research on Cancer showed an estimated 570,000 new cases of cervical cancer were diagnosed worldwide in 2018, making it the fourth most common cancer in women globally.

Poorer countries could benefitm

Cervical Cancer, Vaccines, Infections
HPV vaccines were first licensed in 2007 and have since been adopted in at least 100 countries worldwide. Pixabay

Each year, more than 310,000 women die from cervical cancer, the vast majority of them in poorer countries where HPV immunization coverage is low or non-existent.

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Brisson urged governments in the most-affected countries to take note: “Our results show the vaccines are working, so I hope in the upcoming years we will … see rates of HPV vaccination increase in countries that need it most,” he said. (VOA)

Next Story

US Superbug Infections Rising, but Deaths Falling

The Centers for Disease Control and Prevention estimated about 36,000 Americans died from drug-resistant infections in 2017

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US, Superbug, Infections
Multi-drug-resistant tuberculosis bacteria. (Credit: U.S. Centers for Disease Control and Prevention). VOA

Drug-resistant “superbug” infections have been called a developing nightmare that make conquered germs once again untreatable.US

So there’s some surprising news in a federal report released Wednesday: U.S. superbug deaths appear to be going down.

The Centers for Disease Control and Prevention estimated about 36,000 Americans died from drug-resistant infections in 2017. That’s down 18% from 2013.

US, Superbug, Infections
So there’s some surprising news in a federal report released Wednesday: U.S. superbug deaths appear to be going down. Pixabay

Officials credit an intense effort in hospitals to control the spread of particularly dangerous infections.

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But while deaths are going down, the report says infections overall increased nationally. And while superbugs mainly have been considered a hospital problem, they are appearing much more often elsewhere. (VOA)