c19early.org COVID-19 treatment researchCOVID-19 treatments

A Phase II Randomized, Double-blind Study to Evaluate the Safety, Neutralizing Activity and Efficacy of AZD3152 for Pre-exposure Prophylaxis of COVID-19 in Participants Having an Increased Risk for Inadequate Response to Active Immunization (NOVELLA)

AstraZeneca, NCT06057064, NOVELLA, NCT06057064, May 2024
RCT 116 patients in Russia, showing improved nAb titers with sipavibart prophylaxis, but no significant difference for mortality or symptomatic cases.
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OutcomeImprovementEffect · pTreatmentControl
risk of death 266.7% higher · RR 3.67 · p = 1.00 266.7% higherRR 3.67p = 1.00 2 of 87 (2.3%) 0 of 29 (0.0%) treatment 2 of 87 (2.3%), control 0 of 29 (0.0%)continuity correction due to zero events
risk of symptomatic case 33.3% lower · RR 0.67 · p = 0.64 33.3% lowerRR 0.67p = 0.64 4 of 87 (4.6%) 2 of 29 (6.9%) treatment 4 of 87 (4.6%), control 2 of 29 (6.9%)NNT 44

Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates.

AstraZeneca et al., 17 May 2024, Double Blind Randomized Controlled Trial, placebo-controlled, Russia, preprint, 1 author, trial NCT06057064 (history) (NOVELLA). Contact: information.center@astrazeneca.com.
$0 $500 $1,000+ Efficacy vs. cost for COVID-19 treatment protocols c19early.org November 2026 Russia Angola Colombia Kenya Mozambique Myanmar South Africa Peru Philippines USA Brazil France Italy Canada Pakistan Spain Vietnam Japan Nepal Iran Bangladesh Ethiopia Ghana Germany Mexico South Korea United Kingdom Saudi Arabia Algeria Morocco Yemen Poland Uzbekistan India China Venezuela DR Congo Madagascar Thailand Uganda Egypt Nigeria Taiwan Fiji Zambia Bosnia-Herzegovina Dominican Republic Bolivia Bulgaria Greece Slovakia Iceland New Zealand Trinidad and Tobago Mongolia Czechia Belarus Israel Haiti North Macedonia Hong Kong Qatar Panama Serbia Russia favored low-cost treatments.The average efficacy of treatments was moderate.Low-cost treatments improve early treatment, andprovide complementary/synergistic benefits. More effective More expensive 75% 50% 25% ≤0%
$0 $500 $1,000+ Efficacy vs. cost for COVID-19treatment protocols worldwide c19early.org November 2026 Russia Angola Colombia Kenya Mozambique Myanmar South Africa Peru Philippines USA Brazil France Italy Canada Pakistan Spain Vietnam Japan Iran Bangladesh Ethiopia Ghana Germany Mexico South Korea United Kingdom Saudi Arabia Algeria Morocco Yemen Poland Uzbekistan India China Venezuela DR Congo Madagascar Thailand Uganda Egypt Taiwan Fiji Zambia Dominican Rep. Bolivia Côte d'Ivoire Bulgaria Greece Slovakia New Zealand Trinidad and Tobago Mongolia Zimbabwe Czechia Belarus Israel North Macedonia Hong Kong Qatar Panama Serbia Russia favored low-cost treatments.The average efficacy was moderate.Low-cost protocols improve early treatment,and add complementary/synergistic benefits. More effective More expensive 75% 50% 25% ≤0%