Science

Chloroquine does not help against the coronavirus

A new study clearly shows that the antimalarial chloroquine is completely unsuitable for treating an infection with SARS-CoV-2. The long and heated debate about the drug could finally be over.  

Coronavirus clusters linked to asymptomatic, younger cases

As coronavirus second waves sent several countries back into lockdown, increasing evidence suggests those who may think they are safe are actually helping spread the virus.  

Oxford coronavirus vaccine: Will it provide lasting immunity?

A COVID-19 vaccine in development at Oxford University has shown an effective immune response for 56 days. But will it last longer? Trials are ongoing.  

Vaccination: A long and perilous history

Developing vaccines today is a highly complex task, taking into account the tiniest molecular mechanisms. But the vaccination pioneers in bygone centuries — and their patients — had to be much braver and more daring.  

Polio eradication in Africa points to challenges ahead

Africa looks set to be declared free of wild poliovirus in August. But the fight won't be over. Diseases can be reintroduced, as experience shows in Nigeria. Is it time to reevaluate how we deal with disease control?  

Monkeys and humans think more alike than we knew

Certain patterns of thought seem typically human, especially when it comes to language learning. But are they really? A new study has shown that with the right training, even monkeys can learn grammar.  

Coronavirus: No long-lasting immunity

A study of COVID-19 patients has found that they lost protective immunity within two to three months of recovery. Experts say that raises questions about social distancing, immunity passports and vaccines.  

Can human papillomavirus cause prostate cancer?

Australian researchers say they have found a causal link between prostate cancer and infections through human papillomavirus (HPV). The virus is usually associated with cervical cancer.  

Listen up! Even humans can point their ears toward sounds

German researchers have discovered that humans, like some animals, can also direct their ears toward interesting sounds. The findings could be helpful in the development of new hearing aids.  

World AIDS conference

Brazilian HIV patient cured: Can this be true?

At the 23rd International AIDS Conference, a case was presented in which a patient in Sao Paulo showed no trace of HIV for over a year after he stopped therapy. Scientists are skeptical about the case.  

COVID-19

What's the science on DNA and RNA vaccines?

A number of candidate vaccines for COVID-19 use a genetic modification of the virus. It's a relatively new process that scientists say may be safer and cheaper than conventional vaccines. Aren't there any downsides?  

Neurology

COVID-19: Severe brain damage possible even with mild symptoms

According to British neurologists, COVID-19 can cause serious damage to the brain and central nervous system. Such damage can lead to psychosis, paralysis and strokes, which are often detected in their late stages.