Insects and Coronavirus Covid-19

[Christophe]

I asked my beauf the question ... I will post his answer here ...

For mosquitoes he said the same thing as us ...

For a possible contact by flies or other insects, he told me that:

It's unlikely. Covid19 is spread by droplets of saliva. The fly should bathe in saliva and the other swallow it. It is our lifestyles that spread the virus (...) In Paris it is exceptional to see someone coughing in their elbow or a handkerchief. People are pigs.

Unlikely but not impossible ... note his nervousness (understandable)

[Leo Maximus]

I asked my beauf the question ... I will post his answer here ...

It's unlikely. Covid19 is spread by droplets of saliva. The fly should bathe in saliva and the other swallow it. It is our lifestyles that spread the virus (...) In Paris it is exceptional to see someone coughing in their elbow or a handkerchief. People are pigs.

It is not saliva but blood. He is beside the plate ... Sorry ... But he is right for the pigs, we never see him sneeze in his elbow and cough in their handkerchief ...

The correct question would have been: "Can a mosquito, by biting a patient or a healthy carrier infected with Covid-19, transfer contaminated blood to another person and contaminate it in turn?" A priori, we don't really know yet but it is not too early to ask the question.

In the case of HIV, the answer was yes for blood transfusion and most likely no for mosquitoes.

Now, can Covid-19 be transmitted through blood, via transfusions, like HIV?

[Christophe]

It is not saliva but blood. It is next to the plate ... Sorry ....

Maieeuh I said he had the same thing as us for mosquitoes! I mean no ...

http://www.eid-med.org/actualites/coron ... ansmet-pas

Coronavirus, the mosquito does not transmit it!

09 March 2020

As Europe prepares for an imminent coronavirus epidemic, a question sometimes sprouts in the cantonade: can mosquitoes transmit this new virus, officially named SARS-CoV2? The response from EID-Med entomologists, experts from EMCA and WHO is unanimous: no!

Only mammals

However, viruses are usually subservient to an animal species, a specificity linked to the presence of receptors on the cells of the species they are capable of infecting. Like a lock whose virus is the key. But the car key is not that of the bicycle lock or the front door… However, some viruses can infect several species, as SARS-CoV2 seems to show, with a suspected cycle of transmission between three species of mammals: the bat, the pangolin and the Man. So why shouldn't the mosquito also be infected?

On digestion ...

First, the three aforementioned species are certainly different but much more genetically close to each other than to our biting insect. Mosquitoes that transmit pathogens have previously ingested them via a meal of infected blood. But for the cycle to work, the virus must be able to resist digestion in the mosquito's stomach, so that it can then infect its cells, reach its salivary glands and replicate itself there. It is through this saliva thus contaminated that it then transmits during an injection. However, it took hundreds and thousands of years (or even more!) For the viruses it transmits today to be able to acquire, via a multitude of blood-bite cycles, the characteristics allowing them to pass through the mosquito. without being destroyed. This is an extremely rare process (cf. hepatitis, HIV or other blood diseases, which are absolutely incapable of it). The “new kid” SARS-CoV2 is a respiratory virus, transmitted by droplets (aerosol) emitted when a sick person coughs or sneezes. He seems to have a particular affinity for Man. In the event of a bite of infected human blood, the mosquito will calmly digest this virus, as it does for all the unsuitable pathogens present in the blood it usually consumes.

The little beast

Let's do a little fiction: if a mosquito receives an aerosol particle carrying the coronavirus and breathes it, will it simply be sick? First, the cuticle (outer layer protecting its organs) is hydrophobic (which does not like water). And the "spiracles" (holes) for breathing are extremely fine. So it would not be droplets but microdroplets, as well as a good dose of… bad luck, so that they can pass through these openings. And since mosquitoes are not mammals, the virus cannot infect their respiratory cells. Morality, if you have mosquitoes and, above all, droplets infected in its environment, you should not look for the… little beast. Rather, ask our loved ones to cough in their elbow. And let's wash our hands!

[Leo Maximus]

Can Covid-19 be spread by blood? Fortunately, the blood donation is not interrupted. But....

[GuyGadebois]

Can Covid-19 be spread by blood? Fortunately, the blood donation is not interrupted. But....

COVID-19 and recipients of blood products

The risk level of COVID-19 remains low in transfusion matters. To date, there is no evidence that this virus is transmissible by transfusion. The transmission by transfusion of a respiratory virus - including COVID-19 - has never been documented.

https://www.hema-quebec.qc.ca/coronavirus/index.fr.html

On the contrary:

The FDA, the US food and drug agency, is trying to find a Covid-19 treatment using the blood of cured patients. More than blood, it is plasma transfusion which has been studied for several weeks by the American agency but also by scientists from other countries such as China.

http://www.slate.fr/story/188859/le-san ... e-covid-19

[Leo Maximus]

So neither mosquitoes nor transfusions. Phew!

The more we know about the Covid-19, the better we can protect ourselves from it.