Help
Info
There are no articles in this category. If subcategories display on this page, they may have articles.
We have 137 guests and no members online
In October 2011 our little group: Sonia, Craig, Wendy and Richard visited Brazil. We entered Brazil from Argentina near the Iguassu Falls.
A couple of days ago a story about sulphur-crested cockatoos went semi-viral, probably in an attempt to lift spirits during Sydney's new Covid-19 lock-down. It appears that some smart cocky worked out how to open wheelie-bin lids. That's not a surprise - see below. What is surprising is that others are copying him and the practice is spreading outwards so that it can be mapped in a growing circle of awareness. The cockies are also choosing the red (household rubbish) bins that may contain food, disregarding yellow (cans and bottles); blue (paper and cardboard) and green bins (garden clippings). Yet, now they have also been observed checking-out other potentially food containing bins.
One has even been observed re-closing the lid - presumably to prevent other birds getting to the food.
Back in the 1950's I was given a pet sulphur-crested cockatoo we named Einstein. I was in primary school and I didn't yet know who Einstein was. My father suggested the name - explaining that Einstein was 'a wise old bird'.
As we all now know (unless we've been living under a rock) the only way of defeating a pandemic is to achieve 'herd immunity' for the community at large; while strictly quarantining the most vulnerable.
Herd immunity can be achieved by most people in a community catching a virus and suffering the consequences or by vaccination.
It's over two centuries since Edward Jenner used cowpox to 'vaccinate' (from 'vacca' - Latin for cow) against smallpox. Since then medical science has been developing ways to pre-warn our immune systems of potentially harmful viruses using 'vaccines'.
In the last fifty years herd immunity has successfully been achieved against many viruses using vaccination and the race is on to achieve the same against SARS-CoV-2 (Covid-19).
Developing; manufacturing; and distributing a vaccine is at the leading edge of our scientific capabilities and knowledge and is a highly skilled; technologically advanced; and expensive undertaking. Yet the rewards are potentially great, when the economic and societal consequences of the current pandemic are dire and governments around the world are desperate for a solution.
So elite researchers on every continent have joined the race with 51 vaccines now in clinical trials on humans and at least 75 in preclinical trials on animals.