Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS), and 2019’s Coronavirus Disease – all of them appeared in the animal world before hitting humanity. These viruses can be transmitted by direct contact with an infected animal or by consuming meat or other products that didn’t pass the appropriate processing.

As for the insects, there is still no proof that they can or cannot carry the virus. This means that insects are potential virus carriers, and we should beware of them until scientists figure out the truth.

Article The Rise of New Coronavirus Infection (COVID-19): A Recent Update

Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS), and 2019’s Coronavirus Disease – all of them appeared in the animal world before hitting humanity. These viruses can be transmitted by direct contact with an infected animal or by consuming meat or other products that didn’t pass the appropriate processing.

As for the insects, there is still no proof that they can or cannot carry the virus. This means that insects are potential virus carriers, and we should beware of them until scientists figure out the truth.

Dear Marcelo,

I have read an older study observing common house fly's as being vectors with TCV.

This was done using a different virus, the turkey corona virus.

Article Mechanical Transmission of Turkey Coronavirus by Domestic Ho...

I am not sure if the COVID-19 will be the same..?

If infectious virus particales is found in fecal samples, it would lead me to think it could be a viable vector of transmission.

I have not heard of ticks or mosquitoes as being a good vector.

Best Wishes, Be Safe!

Many thanks, dear Charles!

Dear Dr. Marcelo in the abstract section, there is a first preliminary review on animals & SARS-CoV/2 {dogs, cats, cows, buffalo, pigs, ferrets, pangolins, horses, goats, sheep, pigeons, chickens, }.

Moreover there is also a comment on possible role of humans for the evolution of COVID19 in monkeys in Africa south of Sahara but also for a next wave of COVID19 from monkeys & apes in human population, with a possible African dramatic event HIV/AIDS-like >>> https://www.researchgate.net/post/The_novel_Coronavirus_in_N_Italy_Lombardia_COVID19_2019nCoV_SARSCoV2_shows_a_fatality_rate_compatible_with_SARS-MERS_Why#view=5e9c812cc9c69d6e18442e68

Thank you Dr. Salvatore!

May I provide the following links where I wrote my tentative answers:

1. https://better-lit.com/2020/04/04/entomology-in-the-time-of-covid-19-part-1-can-insects-spread-sars-cov-2/

2. https://better-lit.com/2020/04/06/entomology-in-the-time-of-covid-19-part-2-can-mosquitoes-spread-sars-cov-2/

3. https://better-lit.com/2020/04/09/entomology-in-the-time-of-covid-19-part-3-why-would-mosquitoes-not-be-probable-vectors-of-sars-cov-2/

4. https://better-lit.com/2020/04/13/entomology-in-the-time-of-covid-19-part-4-filth-flies-and-sars-cov-2-no-evidence-but/

Part 5 will hopefully be uploaded by this weekend.

Thank you.

Yet there is no evidence that the insects and arthropods can or cannot carry the COVID-19 virus. However, there is a chance of common house fly (Musca domestica) or cockroach (Periplaneta americana), which might as mechanical vectors for the spread of the infection as they move on a contaminated surface and then transmit it to other surfaces from which people might get infected of the virus by coming in touch.

Mosquito and other blood sucking insects and some flies directly or indirectly can play a role in transmitting the Covid-19. But it needs research for confirmation.

I think that question is very important and many of us have not asked it, the point is that so far the WHO says that insects could not transmit the SARS-Cov-2 virus, but I think it is because of lack of study and lack of time to do work on the subject as all the resources are focused on the health sector, but let's look at this situation if the SARS-Cov-2 virus, can last hours on different surfaces (aluminum, copper, glass, cardboard and fabric) could not remain hours in the chitin of some terrestrial and flying insects, or the proboscis of some hematophagous or saprophagous or even the virus could replicate in the salivary glands or intestine of these, it is necessary to make study on this subject .Translated with www.DeepL.com/Translator (free version)

I just want to add Part 5 of the series of my posts, including a list of references. Note that there have been no studies specifically targeting questions on relationships of insects and SARS-CoV-2 and therefore, there are no available empirical evidences. I am just pointing out possible areas of study and hypotheses, which hopefully will be addressed through collaborative work among experts, including entomologists.

5. https://better-lit.com/2020/04/23/entomology-in-the-time-of-covid-19-part-5-sars-cov-2-cockroaches-and-our-best-practices/

Dear Castro, COVID 19 disease is transmitted by insects is not reported yet. Hopefully in future it will remain the same as we assume now. One thing that is very necessary that this pandemic is letting the animal to have a new journey of life.

Why not, but it is more real that the virus my be transmitted in an indirect way, (non-persistent relationship) or not remaining in the body of the insect, because the virus has not established a complex biological relationship with the insects vectors this moment, and because the COVID 19 virus needs to employ the genetic codes for its genes in way the corresponds to the vectors (?) in the future. scientific perception

insects may be playing role as a vector

Segundo uma live com colegas Entomologistas, as moscas podem ser veiculos mecanicos esporádicos sim! Pousam em tudo e em todos e assim há a possibilidade de transmissao mecanica. Mosquitos não!

Exatamente, prof. José Pereira. Creio que eles atuam como agentes indiretos de transmissão, de forma esporádica. Obrigado pela contribuição!

By clearing the forests, you chase the dangerous virus from his home.

Even if a mosquito picks up a high enough dose of the virus in the blood, there is no evidence that the virus can infect the mosquito or that the mosquito is capable of transmitting it to the next person who bites. on the roll The possible mechanism of transmission is the role of houseflies and cockroaches, but there are no conclusive studies or papers on the subject. the WHO still states that transmission of the virus through mosquitoes is not possible. on the list The possible mechanism of transmission is the role of houseflies and cockroaches

lack of studies on the subject

There is no evidence related to the transmission of COVID 19 by the insect directly or indirectly. But it has the possibility to transmit mechanically by insect because the body surface might be carrying the droplet of COVID 19 from infected people to uninfected. Really it needs to clarify by the research.

Although the role of blood-sucking vector organisms in Covid-19 transmissions has not been clarified yet, it seems that vectors that transmit mechanical transmission such as houseflies and cockroaches will have very negative effects on transmission.

https://www.researchgate.net/post/Could_common_houseflies_also_be_acting_as_a_mechanical_vector_for_COVID-19

I guess I have to repeat or maybe reiterate my answers to the question of the relationship between SARS-CoV-2 and some insect, the last time I posted my reply. Perhaps, the links that I enumerated were hardly noticed, as I noted that some of the subsequent replies were the same as what I have posted in those links.

1. The question of whether insects can spread SARS-CoV-2 or not, is difficult to answer at present. SARS-CoV-2 is new to us. Yet, obviously, there is a need to give answers, albeit tentative, to lessen people’s worries so that they may concentrate on the more salient measures to help ‘flatten the curve.’

2. One possible basis for hypotheses or tentative answers could be the set of data provided by Wang et al. (2020, published in JAMA) on positivity rates of clinical samples.

3. Although the viral infection may be systemic, the low positivity rate for blood samples may also suggest, but not automatically, low possibility of transmission through the blood and by inference, low possibility of blood-sucking mosquitoes becoming vectors. However, this is still a hypotheses, and it requires confirmation with molecular evidence.

4. The viruses transmitted by mosquitoes are primarily members of the virus family Flaviviridae except that of chikungunya which belongs to Togaviridae. They have an entirely different protein envelope structure compared to the coronaviruses (family Coronaviridae). So far as known, coronaviruses have not evolved to be transmitted by mosquitoes.

5. There is no evidence connecting house flies and blow flies, fecal matter, sputum, and SARS-CoV-2. There is no evidence because no studies have been conducted. True, the more urgent matter is to follow recommended preventive measures. But yes, once more we are always reminded that “the absence of evidence is not an evidence of absence.” Hopefully, a collaborative work involving an entomologist, an environmental scientist, and a molecular virologist would provide the required evidence.

6. As in the case of filth flies, the high rate of positivity of the coronavirus in fecal samples makes cockroaches potential mechanical spreaders in places where their populations are high, especially in urban poor communities. Moreover, if the initial data on the persistence of coronaviruses in feces of bats (Le Gouil & Manuguerra 2012; Wu et al. 2020) will be extrapolated to those of humans in urban poor communities, then the possibility of cockroaches helping in local spread of the virus may also increase.

7. For those who would be interested, these are the links I am referring to: (1) https://better-lit.com/2020/04/04/entomology-in-the-time-of-covid-19-part-1-can-insects-spread-sars-cov-2/; (2) https://better-lit.com/2020/04/06/entomology-in-the-time-of-covid-19-part-2-can-mosquitoes-spread-sars-cov-2/; (3) https://better-lit.com/2020/04/09/entomology-in-the-time-of-covid-19-part-3-why-would-mosquitoes-not-be-probable-vectors-of-sars-cov-2/; (4) https://better-lit.com/2020/04/13/entomology-in-the-time-of-covid-19-part-4-filth-flies-and-sars-cov-2-no-evidence-but/; and (5) https://better-lit.com/2020/04/23/entomology-in-the-time-of-covid-19-part-5-sars-cov-2-cockroaches-and-our-best-practices/.

8. I do hope that there would be collaborative research efforts involving entomologists, epidemiologists, and molecular biologists so that our tentative answers or hypothesis will have some definitive or conclusive answers.

No Human evidence of transmission of COVID-19 by insects (houseflies and mosquitoes)

There have been suggestions of transmission of SARS-CoV-2 by insects like houseflies and cockroaches as mechanical vector as Coronavirus in Turkeys can be transmitted by houseflies (1-2). However, as there is no human transmission reported by houseflies, WHO denies this hypothesis (3).

There have been questions that blood-sucking insects like mosquitoes may be vectors for COVID-19 . However, there is indirect evidence in Humans that blood transfusion from a SARS-CoV-2 positive donor did not cause the transmission of the virus to the recipients (4). This can be taken as evidence that insects like mosquitoes that thrive on sucking blood, will not transmit SARS-CoV-2.

1. Article Mechanical Transmission of Turkey Coronavirus by Domestic Ho...

2. Article A Brief Review on the Possible Role of Houseflies and Cockro...

3. https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public/myth-busters?gclid=EAIaIQobChMI4JWHs5HI6QIVxITVCh1ugAL6EAAYASAAEgIYEfD_BwE#houseflies

4. Post-donation COVID-19 identification in blood donors

http://www.sah.org.ar/pdf/covid-19/vox.12925.pdf

Many thanks, Dr. Muhammad Yousuf

There is no proof that insects carry the COVID-19 coronavirus, nor acting as a contaminant. They might be potential careers and we should be aware of them. Notable insects causing diseases are bugs, flies, fleas, cockroaches and mosquitoes. These insects are potentially dangerous. As for mosquitoes, there is no evidence that they transmit SARS-Cov-2 virus that cause COVID 19. Even though the insects are contaminated by the virus, they will not be able to transmit it to human beings.

For insects to transmit COVID 19 -- the virus needs to replicate in insects. There is a consensus in published literature about NO possible involvement of insect mediated transmission at this point. Please see WHO release here: https://www.mosquito.org/news/492656/Can-Mosquitoes-Transmit-the-Coronavirus.htm

Have a look at this useful RG link.

Article Edible insects unlikely to contribute to transmission of cor...

Article Edible insects unlikely to contribute to transmission of cor...

Insects lack a receptor that can bind SARS-CoV-2,

Till now there is no proof of that

Dear

Mosquitoes and ticks that feed on human blood cannot transmit all viruses

There are as yet no studies indicating the transmission of COVID-19 by insects

This is because viruses cannot reproduce within these insects

But insects can be a direct transporter surface, according to the humble opinion

No proof, insects carry the Covid19 virus.

No proof

For insects, still no evidence that they can or cannot mechanically carry or transmit the virus, means it could be a potential carriers, and we all should be aware of them until this critical issue figured out.

Please have a look at the link below:

Article A Brief Review on the Possible Role of Houseflies and Cockro...

There is no evidence of COVID-19 transmission through blood-sucking arthropods like mosquitoes. Though insects such as cockroaches and houseflies, which are major mechanical vectors of pathogens, may be able to transmit COVID-19 by contact with contaminated surfaces and even with the feces of infected individuals, further researches could be carried out to authenticate that.

Fortunately, according to experts there is no any evidence of COVID-19 transmission from insects to insects or insects to human yet but you can infect by touching an object because COVID-19 survive on some surface for significant time. According to CDC: SARS-CoV-2, the virus that causes COVID-19 disease, is primarily spread from person to person by coming in contact with an infected individual’s respiratory droplets, for example saliva or mucus.

There is no study linked eith COVD 19 yet.

La OMS dice que es imposible que los mosquitos transmitan la Covid-19, pero no hay no hay estudios previos al respecto, la propuesta seria hacer un estudio o un ensayo podría ser que se alimenten unos mosquitos culícidos (Anopheles, Aedes o Culex) con sangre de pacientes Covid-19 positivos y a las 24/48/62/86 horas, realizar PCR del tracto digestivo de los mosquitos para observar los resultados, además, también deben compararse con muestras de sangre del paciente del cual se alimentaron los mosquitos y de un paciente negativo para Covid-19, como control. De esta manera tendríamos una base para descartar si los mosquitos pueden transmitir o no la Covid-19

the insects (Mosquitoes,Tick Bugs,Flies,.. ect) there is still no proof that they can or cannot carry the virus. This means that insects are potential virus carriers, and we should beware of them until scientists figure out the

truth.

Thanks

i want to know the answer because I live in LOMBARDY REGION OF itALY - THEREGIONMOST AFFECTED BY COVID19. THIS IS THE LAKE REGION SO MOSQUITOS ARE PLENTIFUL they coul get the virus feasting on a dead bat..

Again, regarding mosquitoes:

1. https://better-lit.com/2020/04/06/entomology-in-the-time-of-covid-19-part-2-can-mosquitoes-spread-sars-cov-2/

2. https://better-lit.com/2020/04/09/entomology-in-the-time-of-covid-19-part-3-why-would-mosquitoes-not-be-probable-vectors-of-sars-cov-2/

In addition to the data provided by Wang et al. (2020), it has been clarified that the positivity rates on clinical samples are based on tests for detecting the viral nucleic acids (RNA) and not the virus itself.

There are no reports about COVID 19s transmission by blood sucking insects such as mosquitoes. However, insects such as houseflies and cockroaches, which are the major mechanical vectors of disease carrier pathogens, may be able to transmit the COVID 19 disease to human beings through contact with contaminated surfaces, as this virus is said to drop down on surfaces, after an infected person's unprotected sneezing or coughing.

Although many insects act as vectors to carry the virus (tungro virus) but there no observation yet covid-19 spreads via insect.

In my opinion, some insects such as housefly could be a candidate to test as a mechanical vectors of COVID-19 ?!!

Yes insects can transmit these viruses as have many examples in the past

No. There has not been observed any evidence.

Yes. It is long known houseflies and others can transmit coronaviruses, but we have studied human coronaviruses very little until this event and few have made any attempt to address this matter as it flies in the face of every bit of action we are taking.

The Chinese coronavirus is easily transmitted from an infected person to a healthy one. Mosquitoes transmit many kinds of viruses such as yellow fever, dengue, Zika, chikungunya, Nile fever among others, for which it is very possible that the coronavirus can be transmitted by vector insects with contaminated blood.

Yeah! There is no evidence of either insect can transmit the COVID-19 to humans, but as per my study on that topic if it is yes then it is an important study to be considered. And need all of your recommendations regarding this topic, because soon, I am going to do research on that topic. Saddam Hussain Marcelo Tavares de Castro

Insects lack a receptor that can bind SARS-CoV-2, thus preventing the virus from replicating in insects, but could being a the risks of mecanic transmission vector of coronaviruses, like SARS-CoV-2.

As COVID-19 is a air borne disease, the possibility of insects spreading COVID-19 is very scarce.