Dealing with reptile supplies in the pandemic

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kingofnobbys
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Dealing with reptile supplies in the pandemic

Postby kingofnobbys » Thu May 14, 2020 6:47 am

Found the source reported in the media regarding life of covid19 ( strains 1 & 2 ) on contaminated materials .

This is important information for us reptile keepers , because most of us get our live insects shipped to us in the mail or delivered to the home ( in boxes and mailer tubes ) by couriers and others visit pet shops and bring home our live insects in plastic tubs .

We have no control over the health status of the staff at the insect breeder's facility , postal workers and the couriers and the staff at their depots.

Some of us are vulnerable to covid19 and there is a risk even if we are self isolating ( under medical advice or simply because we fit the criteria of covid-19 vulnerabilities / co-morbilities ).
Don't simply think because it's been left at your front doorstep that it's safe to handle.

Simple measures on bringing the parcel inside like letting it sit for a day before opening it and handwashing ( or use of a high IP-alc or ET-alc handsanitizer ) to avoid being infected are worth considering.

Image
As shown in Panel A, the titer of aerosolized viable virus is expressed in 50% tissue-culture infectious dose (TCID50) per liter of air. Viruses were applied to copper, cardboard, stainless steel, and plastic maintained at 21 to 23°C and 40% relative humidity over 7 days.
The titer of viable virus is expressed as TCID50 per milliliter of collection medium. All samples were quantified by end-point titration on Vero E6 cells.

Plots show the means and standard errors (ibars) across three replicates. As shown in Panel B, regression plots indicate the predicted decay of virus titer over time; the titer is plotted on a logarithmic scale.

Points show measured titers and are slightly jittered (i.e., their horizontal positions are modified by a small random amount to reduce overlap) along the time axis to avoid overplotting. Lines are random draws from the joint posterior distribution of the exponential decay rate (negative of the slope) and intercept (initial virus titer) to show the range of possible decay patterns for each experimental condition.
There were 150 lines per panel, including 50 lines from each plotted replicate. As shown in Panel C, violin plots indicate posterior distribution for the half-life of viable virus based on the estimated exponential decay rates of the virus titer.
The dots indicate the posterior median estimates, and the black lines indicate a 95% credible interval.
Experimental conditions are ordered according to the posterior median half-life of SARS-CoV-2. The dashed lines indicate the limit of detection.

Data observed
3.33×10^0.5 TCID50 per liter of air for aerosols
10^0.5 TCID50 per mL of medium for plastic, steel, and cardboard
10^1.5 TCID50 per mL of medium for copper ( and alloys like brass ).

https://www.nejm.org/doi/pdf/10.1056/NEJMc2004973
(n engl j med 382;16 nejm.org April 16, 2020)

Note 3.33 x 10^0.5 = Image
Summary
The virus survives
Image

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