Articles on Pneumonia

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Human metapneumovirus, or HMPV, peaks in North America from February to May, just on the heels of flu season. martin-dm/E+ via Getty Images

Human metapneumovirus, or HMPV, is filling ICUs this spring – a pediatric infectious disease specialist explains this little‑known virus

Similar to the patterns seen with COVID-19, flu and RSV, HMPV is making a comeback after years of being repressed by people wearing masks and social distancing.
Red mitochondria in airway cells become coated with green SARS-COV-2 proteins after viral infection: Researchers discovered that the virus that causes COVID-19 damages lungs by attacking mitochondria. (Stephen Archer)

How COVID‑19 damages lungs: The virus attacks mitochondria, continuing an ancient battle that began in the primordial soup

COVID-19 causes lung injury and lowers oxygen levels in patients because the SARS-CoV-2 virus attacks cells’ mitochondria. This attack is a throwback to a primitive war between viruses and bacteria.
Sepsis begins with infection by bacteria or a virus. This panoramic ilustration inside a blood vessel shows rod-shaped bacteria, red blood cells and immune cells called leukocytes. Kateryna Kon/Science Photo Library via Getty Images

Sepsis still kills 1 in 5 people worldwide – two ICU physicians offer a new approach to stopping it

Sepsis onset can be difficult to recognize, in part because its symptoms can mimic those of many other conditions. A treatment delay of even a few hours can make the difference between life and death.
Family members of COVID-19 infected patients stand in a queue with empty oxygen cylinders outside the oxygen filling centre in New Delhi, India. Photo by Naveen Sharma/SOPA Images/LightRocket via Getty Images

It’s possible to build stronger systems to deliver oxygen: here’s what it takes

An effective oxygen system requires prompt recognition of who needs oxygen, a reliable oxygen supply and safe delivery to those who need it.
Geoffrey McKillop (front) with his partner Nicola Dallet McConaghie as they left the hospital where he was discharged after surviving coronavirus. Liam McBurney/PA Images via Getty Images

What doctors know about lingering symptoms of coronavirus

Is it possible that people who recover from COVID-19 will be plagued with long term side effects from the infection? An infectious disease physician reviews the evidence so far.
What would Darwin consider the best adaptation to protect against the coronavirus? rolbos / Getty Images

What does ‘survival of the fittest’ mean in the coronavirus pandemic? Look to the immune system

Who is most likely to survive an infection of the new coronavirus? Two immunologists explain that it is those who mount exactly the right immune response – not too weak, not too strong.

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