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Since the beginning of the pandemic, there has been a raging sometimes ill-informed debate over the effectiveness of face masks as protection against SARS-CoV-2, the virus that causes COVID-19.
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Change in Oxygen Levels
Scientists examined samples and measurements collected from 393 lakes in temperate regions of the globe across a period from 1941 to 2017, discovering a general decrease in dissolved oxygen in both shallow and deep water habitats. That change in oxygen levels has a contagion effect, all the way from the water biogeochemistry to the health of human populations who may depend on these lakes.
It could also bring about boosted greenhouse gas emissions from aquatic bacteria that generate methane. Kevin Rose, an environmental biologist from the Rensselaer Polytechnic Institute said: All complex life relies on oxygen, It s the aquatic food web s support system. And when you begin to lose oxygen, you have the possibility of losing species.
Due to a rise in the number of severe COVID-19 patients, many were left scavenging for hospital beds and gasping for breath, while the country experienced a massive shortage of oxygen supplies. Given that the second wave of coronavirus took a heavy toll on a large population and claimed many lives, it is important to monitor one s oxygen level and take all the measures to keep oneself afloat during these trying times.
A CT scan for COVID merits a word of caution
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Updated:
May 06, 2021 01:48 IST
Going by data and the risk factors, its widespread use in diagnosing the infectious disease needs to be questioned
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Going by data and the risk factors, its widespread use in diagnosing the infectious disease needs to be questioned
There are broadly three reasons why we perform tests in clinical medicine: diagnosis (what is the disease?), etiognosis (what caused a disease?), and prognosis (how will the disease evolve?). It is also important that the outcome of a test should guide treatment in some way, especially when it is being touted as being a monitoring test that provides unique information that cannot be obtained by easier means. Considering how widespread the use of computerised tomography (CT) scans of the thorax during the novel coronavirus pandemic has been, one would assume that the test would satisfy one, if not all the above criteria, for an accurate diagnostic t