Mia Malan Profile picture
Jun 3 8 tweets 5 min read
🧵JUST IN: 1. From Mon, 6 June, people of 50+ can get an extra #Pfizer #COVID19 vaccine booster 120 days after their previous booster. Technically, you can already get one from tomorrow (Sat), as the #EVDS went live tonight, but you’ll only receive an sms alert from Mon.
2. Can you choose if you want an extra #JnJ or #Pfizer booster? No. For this round, you'll need to take a #Pfizer booster (all SA’s #Pfizer jabs will have expired by the end of Oct, so this is one way of using them faster before then).
3. If you had #JnJ as a 1st dose:
- 2nd dose (JnJ/#Pfizer) = 60 days after 1st shot
- 3rd dose (booster, JnJ/Pfizer) = 90 days after 2nd dose
- 4th dose (booster, Pfizer, the one that kicks on Mon) = 120 days after 3rd dose Image
4. If you had #Pfizer as a 1st dose:
- 2nd dose (Pfizer) = 21 days after 1st shot
- 3rd dose (booster, #JnJ/Pfizer) = 90 days after 2nd dose
- 4th dose (booster, Pfizer, the one that kicks in on Mon) = 120 days after 3rd shot (so this will be your 4th dose) Image
5. Can someone of 18-49 years get an extra booster shot from Mon? No. You need to be 50 years or older.
6. What about teens (12-17 years)? Teens can only get vaccinated with #Pfizer in SA and they can’t get any boosters, only 2 (primary) shots of Pfizer.
7. What about kids younger than 12? They can't get vaccinated @ #COVID19 in SA. Why not? @SAHPRA1 has not approved a jab for such kids.
8. If Sahpra approves a jab for kids of 12 and younger, can we use our current #Pfizer stock? It's tricky, but @HealthZA says we can use the Pfizer adult stock, but at 1/3rd of the volume (10 micro ml instead of 30), because kids take smaller doses.

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More from @miamalan

May 18
🧵1. It used to be straightforward to determine when we were in a #COVIDinSA wave. Everyone used the ministerial advisory committee’s formula. In 2022, things are a bit more complicated. Some researchers argue this method is no longer all that useful. bit.ly/3wkRRwv
2. If we use the MAC formula, the fifth wave started on May 7. But since these numbers alone no longer translate into curfews, lockdowns or liquor bans, @nicd_sa researchers believe a new benchmark may be necessary. bit.ly/3wkRRwv
3. The @nicd_sa's @Dr_Groome says #COVID19 case numbers have become less meaningful — using them to calculate a wave, even more so: “Severe outcomes like hospitalisations and deaths are better metrics to use now that we have seen the decoupling of cases and severe outcomes.”
Read 18 tweets
May 10
🧵1. #JoePhaahla, #HIV:
- 8 million SAs = HIV positive in 2021
- Nr on #ARV's: 5.4 million, so there's a gap of over 2 million who are projected to be HIV positive but not on treatment.
- Main concern = spread amongst young people, especially young girls.
2. SA's policy = to provide #HIV treatment for everyone who tests positive to achieve viral suppression and reduce transmission.
3. #JoePhaahla:
- Our target is to scale-up #HIV treatment by another 700 000 this year to above 6 million people.
- Our treatment coverage of those who know their status has slipped to only 76% since #COVID19 Because of COVID we have missed on 90/90/90 target for 2020.
Read 4 tweets
May 10
🧵1. BREAKING: @SAHPRA1 has approved a 3-month extension of the expiry dates of #Pfizer #COVID19 shots when stored at -70 °C. @HealthZA says it's stored the 92,370 jabs that originally expired on March 31 at -70°C, so they'll now only expire on June 30th and can still be used.
2. Why are there new expiry dates?

#COVID19 jabs have only been around for +/- 1.5 years. Manufacturers can only test if they stay stable 4 extended periods of time as the time moves on. They've now established that Pfizer jabs can be kept at -70°C for 12 (instead of 9) months
3. How many #COVID19 #Pfizer jabs does SA have left?
@healthza says on May 9:
10,593,060 doses

When do these jabs expire? (next tweet)
Read 6 tweets
May 3
🧵1. Is SA in a 5th #COVID19 wave?
@ProfAbdoolKarim: It’s too early to tell. We don’t have reliable data 2 compare infections of the last 7 days with the previous 7 days. Why? SA = 2 holidays in the past week, so testing nrs = down + can’t reliably be compared 2 the previous wk.
2. Why do we need to compare data of the last 7 days with the previous 7 days?

- For a 5th wave the 7-day moving average would have doubled every 2-3 days (so we would have had 10,000+ cases by now)
- But we’ve seen only a 52% increase: from 3,097 (April 24) to 4,693 (May 1)
3. Does the lower-than-expected increase for a new wave mean we’re not in a 5th #COVID19 wave?

Not necessarily — it could just be that testing numbers are down because of the 2 public holidays in the past week (far fewer people go to test on public holidays).
Read 11 tweets
Apr 22
🧵1. It's been 2 years of mostly only #COVID19 reporting. What has the pandemic taught me about journalism?

Lesson 1: Accurate information is pretty useless if people don't understand it. Explanatory journalism should be specialist field: bit.ly/36xvxWm
Lesson 2: Pandemics like #COVID19 make things happen faster. But to speed things up you need more hands and skills — you're going to get nowhere on your own.

The power lies in journalism oranisations sharing skills and resources. So learn to work together, or miss the bus.
Lesson 3: FOCUS + be strategic. If you try to cover everything during a pandemic, you'll end up covering nothing. Do the stuff you're best at + leave the rest to others.

@Bhekisisa_MG focused on explanatory + in-depth stories — we rarely covered news: bit.ly/36xvxWm
Read 10 tweets
Apr 13
🧵1. What will a potential next #COVID19 variant of concern look like?
@ProfAbdoolKarim:
We dunno but it's unlikely 2 look like #Omicron, Beta/Delta, unless it arrives only when immunity from Omicron infection = waned
Why? Omicron infection = good immunity @ itself, Beta, Delta
2. Since #Omicron = spreading so fast + widely vs. past variants of concern, there are many vaxxed people who became infected with omicron and now have good immunity 2 all existing variants of concern. Similar immunity = evident in unvaxxed people with past Omicron infection.
3. Since infection with #Omicron creates such good immunity 2 existing variants of concern it'll be difficult 4 Beta/Delta 2 come back + cause a new wave. The next wave has 2 be caused by a variant with little similarity 2 Omicron/will need 2 arrive when Omicron immunity = waned
Read 10 tweets

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