HERD IMMUNITY

herd immunity the resistance to the spread of a contagious disease within a population that results if a sufficiently high proportion of individuals are immune to the disease, especially through vaccination.

The level of vaccination needed to achieve herd immunity varies by disease

Source: https://www.lexico.com/definition/herd_immunity

 Activities and homework for 1A2 students:

1)  Here you have the link to the video classes... in case (= por si acaso) you have not received the email.
2)

Activities and homework for students of C2:

1) Here you have the link to the video classes... in case you have not received the email message.
2) Today's song  ♫  audio -- activity

3) Homework! Voyage, voyage!
4) For those who did not listen to the podcast about the Dunbar number, go to entry 10th April
5) Those who did  not listen to the audio about the hydra, go to entry 16th April
6) EXTRA, EXTRA!!!! Link to activities to write good topic sentences and good paragraphs, hence good essays!